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高三学生备战高考数学少不了多做高考数学模拟考试查漏补缺，这样才能分侧重点进行复习，以下是百分网小编为你整理的2018届苏锡常镇四市高三数学模拟试卷，希望能帮到你。
2018届苏锡常镇四市高三数学模拟试卷题目
一、填空题(本大题共14小题，每小题5分，共70分，请将答案填写在答题卷相应位置)
1.已知 ，则 ▲ .
2.若复数 满足 ，则复数 在复平面上对应的点在第 ▲ 象限.
3.随着社会的发展，食品安全问题渐渐成为社会关注的热点，为了提高学生的食品安全意识，某学校组织全校学生参加食品安全知识竞赛，成绩的频率分布直方图如下图所示，数据的分组依次为 ， ， ， ，若该校的学生总人数为3000，则成绩不超过60分的学生人数大约为 ▲ .
4.在区间 内任取一个实数 , 则满足 的概率为 ▲ .
5.如图是一个算法流程图，则输出 的值为 ▲ .
6.函数 的定义域为 ▲ .
7.已知双曲线 的一条渐近线方程为 ，则该双曲线的焦距为
▲ .
8.已知 ，则 ▲ .
9.已知圆锥的侧面展开图是半径为4，圆心角等于 的扇形，则这个圆锥的体积是 ▲
10.已知圆 为常数)与直线 相交于 两点，若 ，则实数 ▲ .
11、设等差数列 的前 项和为 ，若 ， ， 则 的最小值为 ▲ .
12.若动直线 与函数 ， 的图象分别交于 两点，则线段 长度的最大值为 ▲ .
13.在 中， 、 分别是 、 的中点， 是直线 上的动点.若 的面积为2，则 的最小值为 ▲ .
14.已知函数 有两个不相等的零点 ，则 的最大值为 ▲ .
二、解答题(本大题共6小题，共90分.解答应写出必要的文字说明、证明过程或演算步骤)
15.(本小题满分14分)
在 中，角A,B,C的对边分别为a,b,c，若 ， .
⑴求 的值;
⑵若 ，求 的面积.
16.(本小题满分14分)
如图，在四棱锥P-ABCD中，底面ABCD为梯形，CD∥AB，AB=2CD， AC交BD于O，锐角 PAD所在平面⊥底面ABCD，PA⊥BD，点Q在侧棱PC上，且PQ=2QC.
求证：⑴PA∥平面QBD;
⑵BD AD.
17.(本小题满分14分)
如图是一座桥的截面图，桥的路面由三段曲线构成，曲线 和曲线 分别是顶点在路面 、 的抛物线的一部分，曲线 是圆弧，已知它们在接点 、 处的切线相同，若桥的最高点 到水平面的距离 米，圆弧的弓高 米，圆弧所对的弦长 米.
(1)求弧 所在圆的半径;
(2)求桥底 的长.
18.(本小题满分16分)
如图，已知椭圆 的左顶点 ，且点 在椭圆上， 、 分别是椭圆的左、右焦点。过点 作斜率为 的直线交椭圆 于另一点 ，直线 交椭圆 于点 .
(1)求椭圆 的标准方程;
(2)若 为等腰三角形，求点 的坐标;
(3)若 ，求 的值.
19.(本小题满分16分)
已知函数 ，其中 为参数.
(1)当 时，求函数 在 处的切线方程;
(2)讨论函数 极值点的个数，并说明理由;
(3)若对任意 ， 恒成立，求实数 的取值范围.
20.(本小题满分16分)
已知各项不为零的数列 的前 项和为 ，且 ， ， .
(1)若 成等比数列，求实数 的值;
(2)若 成等差数列，
①求数列 的通项公式;
②在 与 间插入 个正数，共同组成公比为 的等比数列，若不等式
对任意的 恒成立，求实数 的最大值.
扬州市2017届高三考前调研测试
数学Ⅱ(附加题 共40分)
21.[选修4-2：矩阵与变换](本小题满分10分)
已知矩阵 ，设曲线C： 在矩阵 对应的变换下得到曲线C′，求C′的方程.
22.[选修4-4：坐标系与参数方程](本小题满分10分)
在极坐标系中，直线 和圆C的极坐标方程为 ( )和 .若直线 与圆C有且只有一个公共点，求a的值.
23.(本小题满分10分)
某校举办校园科技文化艺术节，在同一时间安排《生活趣味数学》和《校园舞蹈赏析》两场讲座.已知A、B两学习小组各有5位同学，每位同学在两场讲座任意选听一场.若A组1人选听《生活趣味数学》，其余4人选听《校园舞蹈赏析》;B组2人选听《生活趣味数学》，其余3人选听《校园舞蹈赏析》.
⑴若从此10人中任意选出3人，求选出的3人中恰有2人选听《校园舞蹈赏析》的概率;
⑵若从A、B两组中各任选2人，设 为选出的4人中选听《生活趣味数学》的人数，求 的分布列和数学期望 .
24. (本小题满分10分)
在数列 中， ( )
⑴试将 表示为 的函数关系式;
⑵若数列 满足 ( )，猜想 与 的大小关系，并证明你的结论.
2018届苏锡常镇四市高三数学模拟试卷答案
一、填空题
1. 2.一 3.900 4. 5. 120
6. 7.10 8. 9. 10.
11. 12. 13. 14.
15. 【解析】⑴由 得 ，
又 ，所以 ， ………………3分
因为 ，且 为钝角，所以 ， ………………6分
所以 . ………………8分
⑵由正弦定理得 ，所以 ， ……… 11分
所以 的面积 . ………………14分
16. 【解析】⑴如图，连接OQ，
因为AB∥CD，AB =2 CD，
所以AO =2OC，又PQ=2QC，
所以PA∥OQ， …………………3分
又OQ 平面QBD，PA 平面QBD，
所以PA∥平面QBD. ………………… 6分
⑵在平面PAD内过 作 于H，因为侧面PAD⊥底面ABCD，平面PAD 平面ABCD=AD，
PH 平面PAD，所以PH 平面ABCD， …………………9分
又BD 平面ABCD，所以PH BD，又PA⊥BD，
且PA和PH是平面PAD内的两条相交直线，所以BD 平面PAD，…………………12分
又AD 平面PAD，所以BD AD. …………………14分
17. 解：(1)设弧 所在圆的半径为 ,由题意得 ,
即弧 所在圆的半径为13米。 …………………4分
(2)以线段 所在直线为 轴，线段 的中垂线为 轴，建立如图的平面直角坐标系。
米， 米，弓高 米，
， ， ，设 所在圆的方程为
则
弧 的方程为 …………………6分
设曲线 所在抛物线的方程为： ， …………………8分
点 在曲线 上 …………………10分
又弧 与曲线段 在接点 处的切线相同,且弧 在点B处的切线的斜率为 ，
由 得 ， ，
…………………12分
由得 ， ，
桥底 的长为58米 …………………13分
答：(1)弧 所在圆的半径为13米;
(2)桥底 的长 58米。 (答和单位各1分) …………………14分
18. 解：(1)由题意得 ，解得
椭圆 的标准方程： …………………4分
(2) 为等腰三角形，且 点 在 轴下方
1° 若 ，则 ;
2° 若 ，则 ， ;
3° 若 ，则 ，
直线 的方程 ，由 得 或
(不讨论扣2分) …………………9分
(3)设直线 的方程 ，
由 得
…………………11分
若 则 ， ， 与 不垂直;
， ， ，
直线 的方程 ，直线 的方程：
由 解得 …………………13分
又点 在椭圆上得 ，即 ，即
， …………………16分
19. 解析：(1) …………………3分
(2) ，定义域为
，设 ，
① 当 时， ，故 ，
所以 在 上为增函数，所以无极值点. …………………4分
②当 时， ，
若 时 ， ，故 ，故 在 上递增，所以无极值点.
若 时 ，设 的两个不相等的实数根为 ，且 ，
且 ，而 ，则 ，
所以当 单调递增;
当 单调递减;
当 单调递增.
所以此时函数 有两个极值点; …………………7分
③当 时 ，设 的两个不相等的实数根为 ，且 ，
但 ，所以 ，
所以当 单调递??;
当 单调递减.
所以此时函数 只有一个极值点。
综上得：
当 时 有一个极值点;
当 时 的无极值点;
当 时， 的有两个极值点. …………………9分
(3)方法一：
当 时，由(2)知 在 上递增，
所以 ，符合题意; …………………10分
当 时， ， 在 上递增，所以 ，
符合题意; …………………12分
当 时， ，所以函数 在 上递减， 所以 ，
不符合题意; …………………14分
当 时，由(1)知 ，于是
当 时， ，此时 ，不符合题意.
综上所述， 的取值范围是 . …………………16分
方法二： ，注意到对称轴为 ， ，
当 时，可得 ，故 在 上递增，所以 ，符合题意;
当 时， ，所以函数 在 上递减， 此时 ，
不符合题意;
当 时，由(1)知 ，于是
当 时， ，此时 ，不符合题意.
综上所述， 的取值范围是 . …………………16分
20. 解：(1)当 时， ， ，当 时， ， ，
由 得 ，即 ，解得： 。 …………………3分
(2)由 得 ，故 ， ，所以 ，
当 时， ，
因为 ，所以 …………………6分
故数列 的所有奇数项组成以 为首项 为公差的等差数列，
其通项公式 ， …………………7分
同理，数列 的所有偶数项组成以 为首项 为公差的等差数列，
其通项公式是 …………………8分
所以数列 的通项公式是 …………………9分
(3) ，在 与 间插入 个正数，组成公比为 的等比数列，故有 ，
即 ， …………………10分
所以 ，即 ，两边取对数得 ，
分离参数得 恒成立 …………………11分
令 ， ，则 ， ， …………………12分
令 ， ，则 ，
下证 ， ，
令 ， 则 ，所以 ，
即 ，用 替代 可得 ， ， …………………14分
所以 ，所以 在 上递减，
所以 …………………16分
扬州市2017届高三考前调研测试
数学Ⅱ(附加题)参考答案
21.【解析】设 为曲线C上任意一点，点 在矩阵 对应的变换下得到点 ，则： ，即 ，解得 ， ………………5分
(注：用逆矩阵的方式求解同样给分)
又 ，∴ ，即 ，
∴曲线C′的方程为 . ………………10分
22. 【解析】将直线 的极坐标方程化为直角坐标方程得 ; ………………2分
将圆C的极坐标方程化为直角坐标方程得 . ………………4分
因为直线与圆有且只有一个公共点，所以 ，即 ………………8分
解得 或 . ………………10分
23.【解析】⑴设“选出的3人中恰2人选听《校园舞蹈赏析》”为事件 ，
则 ，
答：选出的3人中恰2人选听《校园舞蹈赏析》的概率为 . ………………3分
⑵ 可能的取值为 ，
， ，
，故 .
所以 的分布列为：
X 0 1 2 3
………………8分
所以 的数学期望 . ………………10分
24.【解析】(1) =
又 ， ， ………………3分
⑵当n=1时， ， ，
当n=2时， ， ，
当n=3时， ， ， ………………4分
猜想：当 时， ， ………………5分
下面用数学归纳法证明：
证：①当n=3时，由上知， ，结论成立。
②假设n=k， 时, 成立，即
则当n=k+1， ，
要证 ，即证明
即证明
即证明
即证明 ，显然成立。
∴ 时，结论也成立.
综合①②可知：当 时， 成立。
综上可得：当n=1时， ;当n=2时，
当 ， 时， ………………10分
模拟试卷的练习是备考英语过程中一个重要的步骤，多做英语模拟试卷将对你高考英语很有帮助，以下是百分网小编为你整理的2018届江苏苏锡常镇四市高三英语二模拟试卷，希望能帮到你。
2018届江苏苏锡常镇四市高三英语二模拟试卷题目
英语第一卷(选择题，共85分)
第一部分：听力(共两节，满分20分)
第一节(共5小题：每小题1分，满分5分)
听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
( ) 1. What are the speakers going to do?
A. Pay for the taxi. B. Drink water. C. Sing songs.
( ) 2. What is the man looking for now?
A. His own iPad. B. His wife"s mobile phone. C. His mobile phone.
( ) 3. When does the first flight arrive in Beijing?
A. 5：38 am. B. 7：58 am. C. 8：00 am.:]
( ) 4. What is the woman probably?
A. A teacher. B. A job adviser. C. An officer.
( ) 5. What is Mike doing now?
A. He is meeting friends. B. He is coming here. C. Not clear.
第二节(共15小题;每小题1分，满分15分)
听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟;听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。
听第六段对话，回答第6和第7两个小题。
( ) 6. Why does Victor sound angry?
A. Laura doesn"t come on time. B. Laura doesn"t understand him.
C. Laura won"t wait for him.
( ) 7. What will Laura probably do?
A. Try on some new dresses. B. Wait outside with Victor. C. Read the bulletin board.
听第七段对话，回答第8至第10三个小题。
( ) 8. What makes Jane happy?
A. The good results in the exam. B. The ending of the term.
C. The camping with friends.
( ) 9. What is true about Steve?
A. He will work for some money. B. He likes doing parttime jobs.
C. He hasn"t made up his mind.:]
( )10. What is the probable relationship of the two speakers?[:]
A. Classmates. B. Teacher and student. C. Lovers.
听第八段对话，回答第11至第13三个小题。
( )11. Where are the two speakers?
A. At a restaurant. B. At home. C. In an Indian family.
( )12. Why is the man excited?
A. Because the woman invites him to dinner.
B. Because he is eager to taste Indian food.
C. Because he is going to have some mutton.
( )13. What will the woman eat at last?
A. Chicken, lamb and bread. B. Fish, bread and rice. C. Mutton, rice and bread.
听第九段对话，回答第14至第16三个小题。
( )14. Why does the man go to see the woman?
A. To ask for her help. B. To ask for a talk. C. To ask for an ID number.
( )15. What is the man"s telephone number?
A. 3387265. B. 6387765. C. 6387235.
( )16. Where does this conversation most probably happen?
A. In the woman"s office. B. At the man"s dormitory. C. Outside Mr. Glass" office.
听第十段独白，回答第17至第20四个小题。
( )17. What was the weather like in the north of China the day before yesterday?
A. Snowy. B. Smoggy. C. Rainy.
( )18. What was yesterday"s weather warning level?
A. Red. B. Orange. C. Yellow.
( )19. Which of the following is true according to the passage?
A. Snow and rain have already brought an end to the heavy smog.
B. Recently Beijing has gone through two red alerts for smog.
C. Beijing"s PM 2.5 levels became worse in 2015.
( )20. What is the passage mainly talking about?
A. The weather condition in Beijing.
B. The weather forecast in northern China.
C. The pollution situation in northern China.
第二部分：英语知识运用(共两节，满分35分)
第一节：单项填空(共15小题;每小题1分，满分15分)
请阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最佳选项。
( )21. If you chase two rabbits, as a saying goes, ________ will lose both of them.
A. in which case you B. and you C. which D. you
( )22. As a common sense, children"s involvement in social activities, athletics and hobbies ________ just as important as academic achievement.
A. is B. are C. was D. were
( )23. Many young people are only ready to chat via the Internet, but somewhat ________ to communicate face to face.
A. desperate B. reluctant C. voluntary D. anxious
( )24. We shall hardly please everyone, nor is it necessary that we ________.
A. need B. should C. can D. may
( )25. Whatever the relationship, try to ________ to each person all your kindness and understanding.
A. appeal B. cater C. extend D. attach
( )26. There is always some obstacle in the way, something ________ before we realize the real goal of education.
A. to be got through B. got through
C. getting through D. having been got through
( )27. I could have finished my selfreflection last weekend, but the math classes and exercises ________ all my spare time.
A. take up B. had taken up C. took up D. had been taking up
( )28. —Where are you living now?
—I"ve moved to ________ you know my grandpa once lived.
A. which B. that C. where D. what
( )29. ________ on mobile phones for storing information that people are unable to remember basic things.
A. Such is the dependence B. Such dependence does
C. So they are dependent D. So do they depend
( )30. Youth is a period of our life ________ we see no limit to our hopes and wishes.
A. where B. that C. what D. when
( )31. The ________ of severe punishments plays a major role in the growing road safety problem.
A. presence B. absence C. existence D. evidence
( )32. She felt totally hopeless about the future ________ one day she learned about a charity which provided microloan to women to start business.
A. until B. once C. unless D. when
( )33. ________ tourism, Ohio is a place full of natural beauty and many vacation spots worth visiting.
A. On top of B. In terms of C. In spite of D. On account of
( )34. The threat of air pollution is real and we shouldn"t ________ responsibility to fight it.
A. hand over B. shrink from C. pull over D. arise from
( )35. —I"ve got to line up at the restaurant for a meal.
—________? You can order food at ele.me on your phone.
A. How come B. About what C. Why not D. Why bother
第二节：完形填空(共20小题;每小题1分，满分20分)
请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。
There was a handful of common clay in the river bank. But it had __36__ thoughts of its own value, and wonderful dreams of the great place it was to __37__ in the world when the time came for its virtues to be __38__.
One day the clay was carried far away in a cart __39__ a stony road. But it was not __40__， for it said to itself: “This is necessary. The path to glory is always __41__. Now I am on my way to play a great part in the world.”
But the hard journey was __42__， compared with the suffering after it. The clay was putinto a container and mixed and beaten. It seemed almost __43__. But there was __44__ in the thought that something very noble was __45__ coming out of all this trouble. The clay felt sure that, if it could only wait long enough, a wonderful reward was __46__ for it.
Then it was put upon a __47__ turning wheel, and turned around until it seemed as if it must fly into a thousand pieces. A strange power pressed and molded it, and through all the dizziness and pain it felt that it was taking a new __48__.
Then an unknown hand put it into an oven, and __49__ fires were burning about it. But the clay held itself together, in the confidence of a great future.
At last the baking was finished. The clay was __50__ upon a board, in the cool air. The suffering was passed. The reward was at hand.
Then the clay saw the reward of all its __51__ and pain，—a common flowerpot, straight and ugly. It felt that it was not __52__ for a king"s house, nor for a palace of art. Many days it passed in __53__.
But presently it was set in a greenhouse, where the sunlight fell warm upon it, and day by day as it waited, something was changing within it—a new hope. Still it was __54__， not knowing what the new hope meant.
But one day the clay was carried into a great church. All the people looked towards it because it carried a royal lily as white as snow, which was __55__ in its heart. Now it knew what the hope is!
Then the clay was content, because, though an earthen pot, it held so great a treasure.
( )36. A. deep B. high C. blind D. free
( )37. A. need B. name C. know D. fill
( )38. A. discovered B. developed C. praised D. obtained
( )39. A. in B. over C. across D. through
( )40. A. satisfied B. thrilled C. discouraged D. confused
( )41. A. correct B. narrow C. rough D. straight
( )42. A. anything B. everything C. something D. nothing
( )43. A. unbearable B. unconvincing C. unavoidable D. unaccustomed
( )44. A. anxiety B. comfort C. sympathy D. despair
( )45. A. possibly B. certainly C. immediately D. easily
( )46. A. in use B. in time C. in store D. in need
( )47. A. swiftly B. steadily C. gently D. slowly
( )48. A. place B. direction C. function D. form
( )49. A. dangerous B. evil C. fierce D. destructive
( )50. A. set down B. set out C. set about D. set off
( )51. A. value B. patience C. trust D. complaint
( )52. A. intended B. qualified C. allowed D. presented
( )53. A. peace B. passion C. depression D. harmony
( )54. A. conscious B. optimistic C. innocent D. ignorant
( )55. A. mixed B. fixed C. rooted D. buried
第三部分：阅读理解(共15小题;每小题2分，满分30分)
请认真阅读下列短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。
A
How do you choose between similar postgraduate courses?
After graduating from an undergraduate(本科) course, you could move on to postgraduate study. This might be the ideal investment in reaching the career you want—either strengthening your knowledge and skills, or taking on a new direction. How do you choose the right postgraduate course?
First, decide on the following：
■ subject matter
■ length
■ if it"s taught or researchbased
■ if it"s full or parttime
If you"re clear about those decisions, and you"ve checked the entry requirements, the differences between similar courses may be in the four areas below.
Which course is most helpful to your career aspirations?
■ What are the employment levels of previous postgraduates?
■ Which course has the strongest connections to employers?
■ What is the reputation of the course among employers?
How is the course organized and assessed?
■ How is the course divided?
■ Do you need to pass all parts of it equally?
■ Is the course exambased, continually assessed, or both?
Who are the tutors and are they experts in areas you want to learn about?
■ How well recognised are the academic staff in their fields?[:]
■ How much research have they published?Are their theories significant?
■ Use university open days to research your postgraduate options. They"re a great opportunity to meet and question academic staff directly.
How is the course ranked within league tables?
■ League tables rate courses mostly within broad subject bands including undergraduate degrees and postgraduate qualifications—for example, you can search to see who is best for architecture.
■ Make sure you check the sources of league tables as they can be prejudiced. The Guardian, The Times and The Complete University Guide are some of the more reasonable places to look.
( )56. Which is NOT recommended by the author to consider in choosing the right course?
A. your personal conditions B. the popularity of the course itself
C. the structure of the course D. the rankings of the academic staff
( )57. What is an undergraduate student encouraged to do?
A. Take on a different course for postgraduate study.
B. Choose a course with lower difficulty in its assessment.
C. Go to the university for a facetoface investigation before decision.
D. Consult newspapers of all levels for unprejudiced information.
B
The splendid aurora light displays that appear in Earth"s atmosphere around the north andXXKsouth magnetic(磁的) poles were once mysterious phenomena. Now, scientists have data from satellites and groundbased observations from which we know that the aurora brilliance is a massive electrical discharge similar to that occurring in a neon sign.:.]
To understand the cause of auroras, first picture the Earth enclosed by its magnetosphere(磁层), a huge region created by the Earth"s magnetic field. Outside the magnetosphere, rushing toward the earth is the solar wind, a speedily moving body of ionized(离子化的) gases with its own magnetic field. Charged particles(粒子) in this solar wind speed earthward along the solar wind"s magnetic lines of force. The Earth"s magnetosphere is a barrier to the solar winds, and forces the charged particles of the solar wind to flow around the magnetosphere itself. But in the polar regions, the magnetic lines of force of the Earth and of the solar wind gather together. Here many of the solar wind"s charged particles break through the magnetosphere and enter Earth"s magnetic field. They then rush back and forth between the Earth"s magnetic poles very rapidly and ionize and excite the atoms of the upper atmosphere of the Earth, causing them to produce aurora radiations of visible light.
The colors of an aurora depend on the atoms producing them. The leading greenishwhite light comes from low energy excitation of oxygen atoms. During huge magnetic storms oxygen atoms also undergo high energy excitation and produce pink light. Excited nitrogen(氮) atoms contribute bands of color varying from blue to violet. Viewed from outer space, auroras can be seen as dimly shining belts wrapped around each of the Earth"s magnetic poles. Each aurora hangs like a curtain of light stretching over the polar regions and into the higher latitudes. When the solar flares(闪光) that result in magnetic storms and aurora activity are very strong, aurora displays may extend as far as the southern regions of the United States.
( )58. What is it that directly gives off aurora light?
A. the Earth"s magnetic field B. the solar wind"s magnetic field
C. the Earth"s ionized particles D. the solar wind"s charged particles
( )59. What does the third paragraph mainly discuss?
A. The appearance of auroras around the Earth"s poles.
B. The periodic change in the display of auroras.
C. The factors that cause the variety of colors in auroras.
D. The covering area of auroras based on their colors.
( )60. What can we infer from the passage?
A. The magnetosphere increases the speed of particles from the solar wind.
B. The color of greenishwhite appears least frequently in an aurora display.
C. Earth"s magnetic field contributes to the variety and difference of aurora"s colors.
D. The strength of the solar flares has a positive effect on the extending distance of aurora.
C
With these increased pressures and difficulty in ensuring a graduate job, more people are turning to recruitment(招聘) agencies for help. Luke Harper wrote for the Independent warning students to be cautious when using graduate recruitment agencies in their job hunt. The article"s main argument against graduate recruitment agencies is that they are looking to sign people up to the agency and harvest data, without having any real intention to personally find them a job.
The fundamental problem with this approach is a basic misunderstanding of how the recruitment sector works. One of the more common ways is that recruitment agencies aim to find you a job to secure a fee from their clients. Recruitment agencies operate as a business, not a careers service and are not expected to find you a job while you wait around.
There is no denying that amongst the recruitment agencies, there are some CV(简历) hungry, cut and shut agencies that are uninterested in the candidates they have on their books. However, nowadays these are in the minority and don"t tend to last very long.
Paul Farrer, Chief Executive of a leading recruitment agency is worried that a few bad apples are ruining the reputation of what is an excellent sector. Farrer said “The trouble with such an imbalanced and misleading article is that some graduates may now be put off approaching recruitment agencies who may well be able to help them.”
Professionals in the industry are cautious of how some of the less respectable agencies operate. Earnest recruiters believe that graduates should be aware that some of these agencies will take on graduates for all their details rather than helping them find a job, like Harper mentioned. To fight this, Farrar advises that “Graduates should have a simple checklist before approaching any agency. Has the agency taken the time to talk to me? Have they invited me to a facetoface meeting? Have they guaranteed not to forward my CV to any employer without my permission? These three steps will safeguard every application.”
Farrer also pointed out that that is not the only safety net that graduates can rely on. He said “Graduates can also check to see if the agencies are members of either APSCo or the REC, the two trade bodies they can make an official complaint to. The vast majority of recruitment agencies are professional organisations that help place thousands of graduates every year and poorly researched articles help no one.”
( )61. The main purpose of this passage is ________ graduate recruitment agencies.
A. to advise readers to be cautious of
B. to argue against some misjudgment against
C. to explain why there is a prejudice against
D. to seek the solutions to the problems caused by
( )62. Which of the following is right according to the passage?
A. Luke Harper holds the same idea about jobs with Paul Farrer.
B. Recruitment agencies actually do the same work as a careers service.
C. Job hunters" detailed information is of value to recruitment agencies.
D. A member of APSCo or the REC will not cheat its clients.
( )63. What advice does Paul Farrer give graduates to avoid less respectable agencies?
A. Consulting professionals before giving their personal details to an agency.
B. Making a facetoface investigation into an agency before approaching it.
C. Guaranteeing that the agency will not forward their CV to any employer.
D. Selecting some agencies that are monitored by official trade bodies.
( )64. What is the author"s attitude towards graduate recruitment agencies?
A. Neutral. B. Positive. C. Negative. D. Not Clear.
D
When one loves one"s Art no service seems too hard.
Joe was a man with a genius for art. Delia did things in six octaves(音阶) promisingly.
Joe and Delia became in love with one of the other, or each of the other, as you please, and in a short time were married—for (see above), when one loves one"s Art no service seems too hard.
They began housekeeping in a flat. It was a lonesome flat, but they were happy; for they had their Art, and they had each other.
Joe was learning painting in the class of the great Magister—you know his fame. His feesZxxkComare high; his lessons are light—his highlights have brought him fame. Delia was studying under Rosenstock—you know his reputation as a disturber of the piano keys.:.....]
They were mighty happy as long as their money lasted.
After a while Art flagged. Everything going out and nothing coming in, money was lacking to pay Mr. Magister and Rosenstock their prices. When one loves one"s Art no service seems too hard. So, Delia said she must give music lessons to make the ends meet.
For two or three days she went out looking for pupils. One evening she came home overjoyed.
“Joe, dear，” she said, cheerfully, “I"ve a pupil. And, oh, the loveliest people! General—General Pinkney"s daughter Clementina—on Seventyfirst street.”
“That"s all right for you, Dele，” said Joe, “but how about me? Do you think I"m going to let you work while I play in the regions of high art?”
Delia came and hung about his neck.
“Joe, dear, you are silly. You must keep on at your studies. It is not as if I had quit my music and gone to work at something else. While I teach I learn. I am always with my music.”
“All right，” said Joe. “But I may sell some of my pictures as well.”
The next few weeks, they both busied themselves with their own business and brought back a ten, a five, a two and a one—all legal tender notes—and laid them beside each others" earnings.
One Saturday evening Joe reached home first. He spread his $18 on the table and washed what seemed to be a great deal of dark paint from his hands.
Half an hour later Delia arrived, her right hand tied up in a shapeless bundle of wraps and bandages.
“How is this?” asked Joe. Delia laughed, but not very joyously. “Clementina，” she explained, “insisted upon a Welsh rabbit(一种奶酪) after her lesson. In serving the rabbit she spilled a great lot of it, boiling hot, over my wrist. Nothing serious, dear.”
“What time this afternoon did you burn your hand, Dele?”
“Five o"clock, I think，” said Dele. “The iron—I mean the rabbit came off the fire about that time.”
“Sit down here a moment, Dele，” said Joe. “What have you been doing for the last few weeks, Dale?” he asked.
She braved it for a moment or two with an eye full of love and stubbornness, but at last down went her head and out came the truth and tears.
“I couldn"t get any pupils，” she wept. “I got a place ironing shirts in that big Twentyfourth street laundry. A girl in the laundry set down a hot iron on my hand this afternoon. I think I did very well to make up both General Pinkney and Clementina. What made you ever suspect that I wasn"t giving music lessons?”
“I didn"t，” said Joe, “until tonight. And I wouldn"t have then, only I sent up this cotton waste and oil from the engineroom this afternoon for a girl upstairs who had her hand burned with a smoothingiron. I"ve been firing the engine in that laundry for the last few weeks.”
“And then you didn"t…” said Delia.
And then they both looked at each other and laughed, and Joe began：
“When one loves one"s Art no service seems…”
But Delia stopped him with her hand on his lips. “No，” she said—“just ‘When one loves. ’”
( )65. What can we know about the couple from the story?
A. They both became famous for their talents in art.
B. Studying from famous teachers contributed most to their poverty.
C. Art helped them out of the poverty they were faced with.
D. They turned out to be working at the same laundry.
( )66. What qualities of the couple"s are best conveyed in the story?
A. considerate and giving B. faithful and romantic
C. intelligent and economical D. hardworking and loyal
( )67. What does the underlined word “flagged” most probably mean?
A. became weaker B. displayed its power
C. went in a wrong direction D. returned to its original condition
( )68. Which of the following does NOT give readers a clue that the couple were telling white lies?
A. Joe washed what seemed to be a great deal of dark paint from his hands.
B. Delia"s right wrist was tied up in a shapeless bundle of wraps and bandages.
C. Delia said she must give music lessons to make the ends meet.
D. “The iron—I mean the rabbit came off the fire about that time” said Dale.
( )69. What can serve as the best title of this story?
A. A Service of Art B. The Love for Art
C. A Service of Love D. No Art No Love
( )70. Why does the author repeat “When one loves one"s Art no service seems too hard.”?
A. To reveal the theme of the story. B. To assist with the development of the story.:.]
C. To explain the author"s writing purpose. D. To indicate the sad mood of the story.
第二卷(非选择题，共两大题，35分)
第四部分：任务型阅读(共10小题;每小题1分，满分10分)
请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。
注意：每个空格只填1个单词。
The latest attack on the Internet and on computers in general is Nicholas Carr"s writing, “The Shallows: What the Internet Is Doing to Our Brains.”
Carr and other digital alarmists make a case that seems reasonable, at least on the surface. They argue that Internet communication tools trap us in a shallow culture of constant interruption as we crazily tweet, text and email. This in turn leaves us little time for deep reading, reflection and serious conversation—activities traditionally thought to build knowledge and wisdom.
The alarmists use the concept of “neural plasticity(神经可塑性)” and talk of technology “reshaping” the brain to convince us that the new distractions make us not just less willing but less able, on a physiological level, to focus.
Whenever you hear that something is changing your brain, you ought to be worried—or at least the person telling you wants you to be worried. But does a cultural change like this necessarily lead to a fundamental change to the brain?
The appeals to neural plasticity, backed by studies showing that new changes can reorganize the brain, are largely irrelevant. The basic plan of the brain"s “shaping” is genetically determined long before a child discovers Facebook and Twitter. There is simply no experimental evidence to show that living with digital culture fundamentally changes brain organization in a way that affectsZxxkComone"s ability to focus. Of course, the brain changes any time we form a memory or learn a new skill, but new skills build on our existing capacities without fundamentally changing them. We will no more lose our ability to pay attention than we will lose our ability to listen, see or speak.
The idea that the Internet might make us shallower has some instant appeal, because it is easy to see how the cognitive performance of people around us drops when they are distracted. But the notion that prolonged focus and deep reading mark the best path to wisdom and insight is just an assumption, one that may be an accidental consequence of the printing press existing before the computer. To book authors like us it seems a weird notion, but it is possible that spending 10 or more hours engaged in a single text might not be the most favorable way for building brainpower.
So don"t be afraid of the digital era. Google is not making us stupid, PowerPoint is not destroying literature, and the Internet is not really changing our brains.
Title: Don"t __71__ the digital era!
Digital alarmists" __72__ against the digital culture.
Viewpoints Proofs
●Because of technology, we are__73__ in a shallow culture with a lack of knowledge and wisdom. ● We are constantly __74__ by Internet communication tools, which results in less deep reading, reflection and serious conversation.
● Our brain is reshaped into __75__ and inability to focus by technology. ● The concept of “neural plasticity” shows that brain can be reorganized by new __76__.
Author"s point of view
●Digital culture does not __77__ a fundamental change to the brain. ● The brain"s “shaping” is determined by __78__ long before a child discovers the internet.
●__79__ the influence of new technology on the brain, no experimental evidence shows they will affect one"s ability to focus.
●The Internet does not make us shallower. ● It is just an assumption that wisdom and insight best arise from deep reading and focus.
● The assumption is just a result of the fact that books __80__ existed earlier than computers.
第五部分：书面表达(满分25分)
作为一个即将毕业的高中学生，你经历了各种各样“成长的烦恼”，也积累了很多的成长经验。请以“My View on Growing Pains”为题，准备一份演讲稿，留给即将进入高一的学弟学妹们。
你的演讲必须包括以下内容：
1. 用30词左右陈述你对growing pains的理解。
2. 描述自己经历的一次growing pain，并结合它提出解决此问题的建议。
注意：
1. 词数150左右;
2. 可以适当增加过渡语句，以使行文连贯;
3. 短文中不能出现与本人相关的信息;
4. 短文中已给出的部分不计入总词数。
My View on Growing Pains
Dear newcomers，
On behalf of all the experienced hands, I would like to share my view on Growing pains.
________________________________________________________________________
________________________________________________________________________
Above is my personal understanding of growing pains, I hope it will be of some help to you.
2018届江苏苏锡常镇四市高三英语二模拟试卷答案
第一部分：听力(每小题1分，满分20分)
1～5 CCBAC 6～10 AABCA 11～15 ABBAC
16～20 ABCBC
第二部分：英语知识运用
第一节 单项填空(每小题1分，满分15分)
21～25 DABBC 26～30 ACCAD 31～35 BABBD
第二节 完形填空(每小题1分，满分20分)
36～40 BDABC 41～45 CDABB 46～50 CADCA
51～55 BACDC
第三部分：阅读理解(每小题2分，满分30分)
56～57 DC 58～60 CAD 61～64 BCDB
65～70 DAACCB
第四部分：任务型阅读(每小题1分，满分10分)
71. fear 72.argument(s) 73. trapped
74.interrupted(disturbed) 75. unwillingness(reluctance)
76.change(s)(technology) 77. cause(bring)
78. genes 79. Despite 80. accidentally(incidentally)
第五部分：书面表达(满分25分)
One possible version：
My View on Growing Pains
Dear newcomers，
On behalf of all the experienced hands, I would like to share my view on growing pains.
Just_as_the_two_words_stand_for,_growing_pains_are_the_two_sides_of_one_coin._To_grow,_one_is_doomed_to_suffer:_with_pains,_one_can_grow_more_steadily.
The_point_is,_how_should_we_deal_with_those_pains?
My_suggestion_is,_we_should_face_the_pains_directly_but_avoid_extreme_behaviors._It"s_unwise_to_either_shy_away_from_the_pain_or_exaggerate_your_suffering._Instead,_a_balanced_attitude_is_a_better_solution._For_example,_my_biggest_struggle_lies_in_the_conflict_between_the_impulse_to_play_computer_games_and_the_obligation_to_study._To_solve_the_problem,_I_talked_with_my_parents_and_persuaded_them_to_let_me_play_once_a_week._The_key_is_I_didn"t_lose_myself._Now_learning_for_my_dream_university_has_surpassed_the_desire_for_games,_making_that_pain_a_precious_memory._Had_I_not_kept_the_conflict_in_control._I_wouldn"t_be_so_peaceful_now.
Above is my personal understanding of growing pains, I hope it will be of some help to you.
听力
Text 1
M: The taxi is waiting for us. Let"s hurry.
W: Wait a minute. I"ll take some water with us. That Karaoke doesn"t provide water for free
Text 2
W: James, hurry up, please! We"re going to be late. I reminded you!
M: I"m coming, but where have I put my own mobile phone? I can"t find it.
W: It"s here with me. Just beside my mobile phone. You are forgetful. You gave it to me with your iPad just now.
Text 3
W: Shanghai Air, may I help you?
M: Yes. What"s your daily flight schedule from Shanghai to Beijing?
W: Uh…Let"s see. Our first flight is at 5：38 am, arriving at two to eight am. There is one at 8：00 am, arriving at 10：20 am.
Text 4
W: Alright class, now that we"re all dressed up; let"s see what professions you chose. Ah, I see a fireman, a poilce officer, a medic, and a lifeguard! Can anyone tell me what these people have in common?
M: They save people from had things?
Text 5
W: Hi, Tom. Where is Mike? Wasn"t he going to meet you?
M: Yes, maybe. But maybe he lost his way in the smog. It was also possible that he met some friends on the road. Or maybe he decided to come tomorrow.
Text 6
W: Sorry, Victor!
M: Laura! “Sorry” doesn"t cut it! You were supposed to meet me right here forty minutes ago![:.]
W: Now! Now! What"s a few minutes between friends?
M: You don"t get it!
W: Oh. look! Here"s a note on the bulletin board. The new fashions have arrived. I must check them out! Come with me?
M: No way! You try on every dress, and it drives me crazy!
W: Well, it"ll only take a second. Just a tiny look at the new fashions. Aren"t you coming in?
M: No, thank you. I"ll wait outside.
Text 7
W: Hello Steve. How are you?
M: Oh I"m too bad today, thank you Jane. And you? How did you go in the exams?
W: I"m not sure. I haven"t got all my results yet, but I"m so glad we"re coming up to the end of the term. I really need a holily, so I"m going camping with some friends. What are you doing over the break Steve?
M: I haven"t got any plans yet. I don"t really have enough money to fly home. I suppose I could get a parttime job and earn some money, but I don"t really want to. Then again, maybe I could start studying for next term.
Text 8
M: You know. Susan, I"ve never had Indian food before. I am really not sure what I should order.
W: You"ve never eaten Indian food before? I thought everyone in Shanghai had by now. Indian food is really trendy right now, extremely fashionable.[:.....]
M: Ye, I know. That is why when you asked me to come I was so excited. I"ve been wanting to try it for quite some time. So, what do you suggest?[:.]
W: Well, everyone who eats Indian food usually likes Tandoori chicken. It is a simple dish of chicken that has been covered with spices and then roasted.
M: Sounds delicious. What else?
W: My favorite is spicy lamb curry. Do you like to eat lamb?
M: I love mutton, but I am unable to eat spicy food. It is too hard on my stomach.
W: Well, then I"ll order the mild lamb curry for you and I"ll get the spicy fish curry.
M: Fine. What about rice? Isn"t it traditional to eat curry with rice?
W: That"s right! Are you sure you haven"t eaten Indian food before? I"ll order us both a plate of saffron rice. We need some bread, too. There is a traditional Indian bread called nan. It tastes great with curry and rice. I"ll also order us both a plate of nan.
M: This is starting to sound like a lot of food. But no worries; I"m starving.
Text 9
W: Please come in.
M: Hello, Janis, my name is Tom Lee.
W: Hello, Tom, nice to meet you. What can I do for you?
M: Well, I would like to make a special request for leave. You can assist me with this, right?
W: Yes, just let me get the special leave form. Oh, where did I put those things? I just received a new batch, and I put them somewhere around here…Oh! Here they are. Now, then, what is your student ID number?
M: It"s P as in Peter, D as in David 4462.
W: PD 4462. Okay. What is your eddress?
M: I live here on campus, in the A dormitory, room 122.
W: A dormitory, room 122. And your phone number?
M: 6387235
W: Very well, and what department do you study in?
M: I study in the art department.
W: Ah, so you"re an artist, how interesting. Who is your course advisor?
M: Mr. Glass.
Text 10
Snow and rain forecast for Monday morning is expected to bring to an end to the heavy smog that has blanketed much of the north for the past two days.
Many cities in China were all hit by smog on Sunday, according to the National Meteorological Centre, leaving much of the north of China under a yellow alert for pollution for the second day in a row.
The mainland has a fourtier, colourcoded, weather warning system. Red represents the most severe weather, followed by orange, yellow and blue.
Beijing has twice issued a red alert when air quality reached dangerous levels, ordering schools to postpone classes and carrying out traffic restrictions.
Many local residents have complained of inconveniences caused by the restrictions, and are growing more impatient with authorities" failure to improve the air quality.
Official data showed Beijing"s PM2.5 levels had improved from January 2015 to October 2015 compared to the same period in 2014, but pollution had bounced back significantly in November and December.
Winter months are usually the most polluted in northern China, due to the increased use of central heating in downtown areas and the burning of coal.
高三语文的学习和复习效果直接影响到学生的高考成绩,所以我们现在应该多做一些模拟考试题来提高考试成绩。以下是百分网小编为你整理的2018届江苏苏锡常镇四市化学第二次模拟考试题，希望能帮到你。
2018届江苏苏锡常镇四市化学第二次模拟考试题题目
可能用到的相对原子质量：H：1 C：12 N：14 O：16 Na：23 Mg：24 S：32 Cl：35.5
Fe：56 Ba：137
选择题(40分)
单项选择题：本题包括10小题，每小题2分，共计20分。每小题只有一个选项符合题意。
1. “保护环境”是我国的基本国策。下列做法不应该提倡的是( )
A. 化石燃料脱硫、脱硝处理 B. 工业废水经处理达标排放
C. 废电子产品统一回收处理 D. 农作物秸秆就地露天焚烧
2. 下列有关氮元素及其化合物的表示正确的是( )
A. 质子数为7、中子数为8的氮原子：87N
B. 氮原子的结构示意图：
C. 氨分子的电子式：H∶N?H ∶H
D. 对硝基甲苯的结构简式：NO2CH3
图1
3. 下列说法正确的是( )
A. 分子式分别为C2H6和C4H10的两种有机化合物一定互为同系物
B. 某反应过程中的能量变化如图1所示，可见催化剂能改变该反应的焓变
C. 非金属氧化物一定是酸性氧化物
D. 1 mol N2与3 mol H2在一定条件下充分反应可得2 mol NH3
4. 工业制粗硅的反应为2C+SiO2=====高温Si+2CO↑。下列说法正确的是( )
A. SiO2为分子晶体，Si为原子晶体
B. Si是光导纤维的主要成分
C. 在该反应条件下，C的氧化性强于Si的氧化性
D. 每生成1 mol Si理论上转移的电子数目约为4×6.02×1023
5. X、Y、Z、W为短周期主族元素，X原子M层有1个电子，Y原子最外层电子数为最内层电子数的2倍，Z元素的最高化合价为最低化合价绝对值的3倍，Z、W同周期，W的原子半径小于Z。下列叙述正确的是( )
A. 原子半径由大到小的顺序：Z、X、Y
B. 元素非金属性由强到弱的顺序：W、Z、Y
C. 简单气态氢化物的稳定性由强到弱的顺序：Z、W
D. W分别与X、Y形成的化合物化学键类型相同
6. 常温下，下列各组离子一定能在指定溶液中大量共存的是( )
A. KWc(H+)=1×10-13 mol•L-1的溶液中：Fe2+、K+、NO-3、SO2-4
B. 使酚酞试液变红色的溶液中：Na+、Ba2+、NO-3、Cl-
C. c(Fe3+)=0.1 mol•L-1的溶液中：Na+、Cl-、SCN-、SO2-4
D. 水电离的c(H+)=1×10-13 mol•L-1的溶液中：K+、Na+、Br-、HCO-3
图2 图3
7. 下列实验操作正确的是( )
A. 用图2所示装置制备Cl2
B. 将混合气体通过装有NaOH溶液的洗气瓶除去Cl2中混有的HCl
C. 用图3所示装置分离CH3COOC2H5与饱和Na2CO3溶液
D. 称取1.06 g Na2CO3固体，置于100 mL容量瓶中，加水稀释，配制0.10 mol•L-1的Na2CO3溶液
8. 在给定条件下，下列选项中所示的物质间转化均能一步实现的是( )
A. Al(OH)3??→盐酸AlCl3(aq)??→蒸发无水AlCl3
B. Fe2O3??→盐酸FeCl3(aq)??→CuFe
C. NaOH(aq)??→CuSO4(aq)Cu(OH)2??→葡萄糖△Cu2O
D. NH3??→O2、△催化剂NO2??→H2OHNO3
9. 下列指定反应的离子方程式正确的是( )
A. 用强碱溶液吸收硝酸工业的尾气：NO+NO2+2OH-===2NO-2+H2O
B. NH4HCO3溶液与足量NaOH溶液共热：
NH+4+HCO-3+2OH-=====△CO2↑+NH3↑+2H2O
C. 明矾净水：Al3++3H2O===Al(OH)3↓+3H+
D. 苯酚加入NaHCO3溶液中：C6H5OH+HCO-3?→C6H5O-+CO2↑+H2O
图4
10. 某原电池装置如图4所示，电池总反应为2Ag+Cl2===2AgCl，电解液为1 mol•L-1的盐酸。下列说法正确的是( )
A. 正极反应为AgCl+e-===Ag+Cl-
B. 放电时交换膜右侧溶液中有大量白色沉淀生成
C. 放电后交换膜右侧溶液酸性增强
D. 当电路中转移0.01 mol e-时交换膜左侧溶液中约减少0.01 mol离子
不定项选择题：本题包括5小题，每小题4分，共计20分。每小题只有一个或两个选项符合题意。若正确答案只包括一个选项，多选时，该小题得0分;若正确答案包括两个选项，只选一个且正确的得2分，选两个且都正确的得满分，但只要选错一个，该小题就得0分。
11. 下列说法正确的是( )
A. 实验室用Zn和稀硫酸制H2，为加快反应速率，可向稀硫酸中加入少量Cu粉
B. CH3Cl(g)+Cl2(g)??→光照CH2Cl2(l)+HCl(g)常温下能自发进行，则该反应的ΔH>0
C. 在一体积可变的恒温密闭容器中发生反应PCl3(g)+Cl2(g)??PCl5(g)，压缩体积，平衡正向移动，K值增大
D. 25℃时Ka(HClO)=3.0×10-8，Ka(HCN)=4.9×10-10，若该温度下NaClO溶液与NaCN溶液pH相同，则c(NaClO)
12. 扁桃酸衍生物Z是重要的医药中间体，其合成路线如下：
HOOHOOH?→HOOHOOCH3?→HOBrOOCH3
X Y Z
下列叙述正确的是( )
A. 化合物X、Y、Z均含1个手性碳原子
B. 两分子X可生成含有3个六元环的分子
C. 在浓硫酸中加热，化合物Y可发生消去反应
D. 三种物质均能与NaOH和Na2CO3溶液反应，且1 mol Z最多可消耗4 mol NaOH
13. 下列设计的实验方案能达到实验目的的是( )
A. 制备Fe(OH)3胶体：0.1 mol•L-1 FeCl3溶液与0.3 mol•L-1 NaOH溶液等体积混合
B. 验证溴原子：取C2H5Br少许与NaOH溶液共热，冷却后滴加AgNO3溶液
C. 检验Fe2+：取少量待测液，向其中加入适量新制氯水，再滴加KSCN溶液
D. 比较AgCl和AgI的溶解度：向2 mL 0.1 mol•L-1 NaCl溶液中滴加数滴同浓度AgNO3溶液，然后再滴入KI溶液
14. 25℃时下列有关溶液中微粒的物质的量浓度关系正确的是( )
A. 0.10 mol•L-1 CH3COONa溶液中通入HCl气体至pH<7：
c(CH3COO-)+c(CH3COOH)
B. 0.10 mol•L-1 CH3COONa溶液中通入HCl气体至pH=7：
c(Na+)>c(Cl-)=c(CH3COOH)
C. 20 mL 0.10 mol•L-1 CH3COONa溶液与10 mL 0.10 mol•L-1 HCl溶液混合得到的酸性溶液：c(CH3COOH)+2c(H+)=c(CH3COO-)+2c(OH-)
D. 20 mL 0.10 mol•L-1 CH3COONa溶液与10 mL 0.10 mol•L-1 HCl溶液混合得到的酸性溶液：c(Na+)>c(Cl-)>c(CH3COO-)>c(CH3COOH)>c(H+)>c(OH-)
15. 在温度T1和T2时，分别将0.50 mol CH4和1.20 mol NO2充入体积为1 L的密闭容器中，发生如下反应：CH4(g)+2NO2(g)??N2(g)+CO2(g)+2H2O(g)，测得n(CH4)随时间变化数据如下表：
时间/min 0 10 20 40 50
T1 n(CH4)/mol 0.50 0.35 0.25 0.10 0.10
T2 n(CH4)/mol 0.50 0.30 0.18 …… 0.15
下列说法正确的是( )
A. T2时CH4的平衡转化率为70.0%
B. 该反应的ΔH>0、T1
C. 保持其他条件不变，T1时向平衡体系中再充入0.30 mol CH4和0.80 mol H2O(g)，平衡向正反应方向移动
D. 保持其他条件不变，T1时向平衡体系中再充入0.50 mol CH4和1.20 mol NO2，与原平衡相比，达新平衡时N2的浓度增大、体积分数减小
非选择题(80分)
16. (12分)氯化亚铜(CuCl)广泛应用于化工、印染、电镀等行业。CuCl微溶于水，不溶于稀酸，可溶于Cl-浓度较大的体系，在潮湿空气中易水解氧化。以海绵铜(主要成分是Cu和少量CuO)为原料，采用硝酸铵氧化分解技术生产CuCl的工艺过程如下：
图5 (NH4)2SO3的用量与Cu2+沉淀率的关系
(1) 溶解步骤的温度应控制在60～70℃，原因是______________。该步骤中Cu与NH4NO3反应的离子方程式为(N元素被还原到最低价)________。
(2) 还原步骤发生反应的离子方程式为______________。
(3) 滤液的主要成分为______________(填化学式)，洗净过滤所得固体应选用________(填序号)。
A. 盐酸 B. 硫酸 C. 硝酸
(4) (NH4)2SO3的用量与Cu2+沉淀率的关系如图5所示，工业上n[(NH4)2SO3]/n(Cu2+)采用0.6最为适宜，此时(NH4)2SO3略过量，其原因是________________。
17. (15分)白黎芦醇具有抗氧化和预防心血管疾病的作用。可通过以下方法合成：
HOCOOHOH??→(CH3)2SO4CH3OCOOHOCH3??→浓H2SO4、△CH3OHC10H12O4??→NaBH4C9H12O3??→HBr
A B C D
CH3OCH2BrOCH3??→1)Li2)CH2OCHOCH3OCH3OCH2CHOHOCH3
E F
??→浓H2SO4△C17H18O3??→BBr3HOHOCHCHOH
G 白黎芦醇
(1) 化合物B中的含氧官能团为____________和____________(填官能团名称)。
(2) 写出A→B的反应方程式：______________。
(3) D的结构简式为______________;由F→G的反应类型是____________。
(4) 写出同时满足下列条件的C的一种同分异构体的结构简式：________。
①能发生银镜反应，与FeCl3溶液不显色;
②能发生水解反应，水解产物之一能与FeCl3溶液显色;
③分子中含有4种不同化学环境的氢。
CH2CO
化合物Y(5) 请写出以苯甲醛为原料制备化合物Y(结构简式见右图)的最简合成路线流程图(无机试剂可任选)。合成路线流程图示例如下：
CH3CHO??→O2催化剂，△CH3COOH??→CH3CH2OH浓硫酸，△CH3COOCH2CH3
18. (12分)实验室用铁粉制备摩尔盐的操作流程如下：
(1) 流程中“趁热”过滤的原因是________________________________________________________________________。
(2) 反应1制得硫酸亚铁的物质的量理论上应小于________mol。
(3) 为确定摩尔盐的化学式，进行如下实验：现称取4.704 g新制摩尔盐，溶于水配制成100.0 mL溶液，再将该溶液分成两等份。
向其中一份溶液中加入足量Ba(OH)2溶液，并微热，逸出能使湿润的红色石蕊试纸变蓝的气体，同时生成白色沉淀，随即沉淀变为灰绿色，最后带有红褐色，用足量稀盐酸处理沉淀物，充分反应后过滤、洗涤和干燥，得白色固体2.796 g。
另一份溶液用0.050 0 mol•L-1 K2Cr2O7酸性溶液滴定，当Cr2O2-7恰好完全被还原为Cr3+时，消耗K2Cr2O7溶液的体积为20.00 mL。
①25℃时，Ksp(BaSO4)=1.1×10-10，若要使溶液中SO2-4离子沉淀完全(即该离子浓度须小于1×10-5 mol•L-1)，则此时c[(Ba(OH)2]≥________mol•L-1。
②确定该摩尔盐的化学式(写出计算过程)。
19. (15分)亚硝酸钠(NaNO2)是一种常见的食品添加剂，使用时必须严格控制其用量。某兴趣小组用下图所示装置制备NaNO2并对其性质作如下探究(A中加热装置已略去)。
【背景素材】
①2NO+Na2O2===2NaNO2;
②NO能被酸性KMnO4氧化成NO-3，MnO-4被还原为Mn2+。
③在酸性条件下NaNO2能把I-氧化为I2;S2O2-3能把I2还原为I-。
【制备NaNO2】
(1) 装置A三颈烧瓶中发生反应的化学方程式为________________。
(2) B装置的目的是①______________，②________________。
(3) 为保证制得的亚硝酸钠的纯度，C装置中盛放的试剂可能是________(填序号)。
A. P2O5 B. 碱石灰 C. 无水CaCl2 D. 生石灰
(4) E装置的作用是________________________________________________________________________。
【测定NaNO2纯度】
(5) 本小题可供选择的试剂有：
A. 稀硫酸 B. c1 mol•L-1 KI溶液 C. 淀粉溶液 D. c2 mol•L-1 Na2S2O3溶液
E. c3 mol•L-1酸性KMnO4溶液
①利用NaNO2的还原性来测定其纯度，可选择的试剂是________(填序号)。
②利用NaNO2的氧化性来测定其纯度的步骤是：准确称取质量为m的NaNO2样品放入锥形瓶中，加适量水溶解________(请补充完整实验步骤)。
20. (14分)利用太阳能热化学硫碘循环分解水制氢反应过程如下图所示：
(1) 反应Ⅱ中涉及的热化学方程式为：
①H2SO4(l)===SO3(g)+H2O(g) ΔH=+177.3 kJ•mol-1
②2SO3(g)??2SO2(g)+O2(g) ΔH=a kJ•mol-1
③2H2SO4(l)===2SO2(g)+O2(g)+2H2O(g) ΔH=+550.2 kJ•mol-1
a=________;反应②的平衡常数表达式为________。
(2) 反应Ⅰ得到的产物可用I2进行分离。该产物的溶液在过量I2的存在下会分成两层——含低浓度I2的H2SO4溶液层和高浓度的I2的HI溶液层。
①区分两层溶液可加入的试剂为________________(填化学式)。
②下列说法正确的是________(填序号)。
A. SO2在反应Ⅰ中作氧化剂 B. 加过量I2前，H2SO4溶液和HI溶液不互溶
C. 两层溶液的密度存在差异 D. I2在HI溶液中比在H2SO4溶液中易溶
(3) 用氧缺位铁酸铜(CuFe2O4-x)作催化剂，利用太阳能热化学循环分解H2O也可制H2，其物质转化如图6所示。
图6
图7
①氧缺位铁酸铜(CuFe2O4-x)与水反应的化学方程式为________。
②若x=0.15，则1 mol CuFe2O4参与该循环过程理论上一次能制得标准状况下的H2体积为________L。
③CuFe2O4可用电化学方法得到，其原理如图7所示，则阳极的电极反应式为______________。
21. (12分)【选做题】本题包括A、B两小题，请选定其中一小题并作答。若多做，则按A小题评分。
A. [物质结构与性质]
为了实现“将全球温度上升控制在2℃以内”，科学家正在研究温室气体CH4和CO2的转化和利用。
(1) 下列说法正确的是________(填序号)。
A. CH4与CO2分子均为含有极性共价键的非极性分子
B. 第一电离能：O>N>C
C. 沸点高低：CH4>SnH4>GeH4>SiH4
D. CH+3离子的空间构型为平面正三角形
(2) CH4和CO2在Ni催化作用下反应可获得化工原料CO和H2。
①Ni基态原子核外电子排布式为______________。
②与CO互为等电子体的阴离子的电子式为____________，Ni能与CO形成正四面体形的配合物Ni(CO)4，1 mol Ni(CO)4中含有σ键的数目为________。
图8
(3) CH4和CO2在含有钛氧化物的某种催化剂作用下，可直接转化为CH3COOH。
①CH3COOH中C原子轨道杂化类型为____________;
②钛氧化物晶胞结构如图8所示，写出其化学式：______________________。
B. [实验化学]
苯甲酸在水中的溶解度为：0.18 g(4℃)、0.34 g(25℃)、6.8 g(95℃)。乙醚的沸点为34.6℃。实验室常用苯甲醛制备苯甲醇和苯甲酸。其原理为：
2CHO+NaOH?→CH2OH+ COONa
图9
实验步骤如下：
①向图9所示装置中加入适量NaOH、水和苯甲醛，混匀、加热，使反应充分进行。
②从冷凝管下口加入冷水，混匀，冷却。倒入分液漏斗，用乙醚萃取、分液。水层保留待用。将乙醚层依次用10% Na2CO3溶液、水洗涤。
③将乙醚层倒入盛有少量无水MgSO4的干燥锥形瓶中，混匀、静置后将其转入蒸馏装置，缓慢均匀加热除去乙醚，收集198℃～204℃馏分得苯甲醇。
④将步骤②中的水层和适量浓盐酸混合均匀，析出白色固体。冷却、抽滤得粗产品，将粗产品提纯得苯甲酸。
(1) 步骤②中，最后用水洗涤的作用是______________。将分液漏斗中两层液体分离开的实验操作方法是：先__________后__________。
(2) 步骤③中无水MgSO4的作用是____________________。
(3) 步骤④中水层和浓盐酸混合后发生反应的化学方程式为____________;将反应后混合物冷却的目的是______________。
(4) 抽滤装置所包含的仪器除减压系统外，还有____________、____________(填仪器名称)。
密封线
(这是边文，请据需要手工删加)
2018届江苏苏锡常镇四市化学第二次模拟考试题答案
选择题(40分)
单项选择题：(本题包括10小题，每小题2分，共计20分。每小题只有一个选项符合题意。)
1. D 2. B 3. A 4. D 5. B 6. B 7. C 8. C 9. A 10. C
不定项选择题：本题包括5小题，每小题4分，共计20分。每小题只有一个或两个选项符合题意。若正确答案只包括一个选项，多选时，该小题得0分;若正确答案包括两个选项时，只选一个且正确的得2分，选两个且都正确的得满分，但只要选错一个，该小题就得0分。
11. A 12. AB 13. D 14. BC 15. AD
非选择题(80分)
16. (12分)
(1) 温度低溶解速率慢，温度过高NH4NO3易分解(2分)
4Cu+ NO-3+10H+===4Cu2++ NH+4+3H2O(2分)
(2) 2Cu2++ SO2-3+2Cl-+H2O===2CuCl↓+ SO2-4+2H+(2分)
(3) (NH4)2SO4 H2SO4(2分) B(2分)
(4) 保证生成的CuCl不被氧气氧化或(NH4)2SO3被空气中的氧气氧化(2分)
17. (15分)
(1) 羧基、醚键(各1分)
(2) HOCOOHOH+(CH3)2SO4?→CH3OCOOHOCH3+H2SO4(2分)
(3) CH3OCH2OHOCH3(2分) 消去反应(2分)
(4) CH3CH3OOCHOOCH3或CH3CH3OOCHOOCH3 (2分)
(5) CHO??→H2催化剂，△CH2OH??→HBrCH2Br??→1) Li2)CHOCH2CHOH??→O2催化剂、△CH2CO(5分)
(每步1分，全对奖励1分，共5分)
18. (12分)
(1) 防止温度降低，硫酸亚铁晶体析出(2分)
(2) 0. 075 mol(2分)
(3) ①1. 1×10-5 mol•L-1(2分)
②解：n(SO2-4)=2.796 g233 g•mol-1=0.012 mol(1分)
6Fe2++Cr2O2-7+14H+===6Fe3++2Cr3++7H2O
6 1
n(Fe2+) 0.0500 mol•L-1×0.020 L
n(Fe2+) =0.001 mol×6=0.006 mol(1分)
n(NH+4)+2n(Fe2+)===2n(SO2-4)，n(NH+4)=0.012 mol(1分)
n(H2O)=4.7042g-0.012 mol×96 g•mol-1-0.012 mol×18 g•mol-1-0.006 mol×56 g•mol-118 g•mol-1
=0.036 mol(1分)
n(SO2-4)∶n(Fe2+)∶n(NH+4)∶n(H2O)===0.012∶0.006∶0.012∶0.036
=2∶1∶2∶6(1分)
答：该摩尔盐的化学式为(NH4)2Fe(SO4)2•6H2O[或(NH4)2SO4•FeSO4•6H2O](1分)
19. (15分)
(1) C+4HNO3(浓)=====△CO2↑+4NO2↑+2H2O(2分)
(2) ①将NO2转化为NO ②铜与稀硝酸反应生成NO(2分)
(3) BD(4分)
(4) 吸收有毒的NO气体，避免污染空气(2分)
(5) ①E(2分)
②加入过量的c1 mol•L-1 KI溶液、淀粉溶液，然后滴加稀硫酸，用c2 mol•L-1 Na2S2O3溶液滴定至溶液由蓝色恰好变为无色，且半分钟内不变色，读数，重复以上操作2～3次(3分)
20. (14分)
(1) 195. 6(2分) c2(SO2)•c(O2)c2(SO3)(2分);
(2) ①BaCl2(2分) ② CD(2分)
(3) ① CuFe2O4-x+xH2O===CuFe2O4+xH2(2分)
②3.36(2分) ③Cu+2Fe+4O2--8e-=== CuFe2O4(2分)
21. (12分)【选做题】
A. [物质结构与性质]
(1) AD(2分)
(2) ① 1s22s22p63s23p63d84s2或[Ar]3d84s2(2分)
②[∶C⋮⋮N∶]-或[∶C⋮⋮C∶]2-(2分) 8 mol或8×6.02×1023(2分)
(3) ①sp3、sp2(2分) ②TiO2(2分)
B. [实验化学]
(1) 除去NaOH、苯甲酸钠、碳酸钠等杂质(2分)
把下层液体从下端放出、把上层液体从上口倒出(每空1分，共2分)
(2) 干燥剂(2分)
(3) C6H5—COONa+HCl?→C6H5—COOH+NaCl (2分)
使苯甲酸尽可能多的析出 (2分)
(4) 吸滤瓶 (1分) 布氏漏斗(1分)