江苏省启东中学高中英语必修3《Unit 1 The world of our senses》达标测验题(译林版)【含答案】
一、听力测试(共两节，共30分)
第一节：(共5小题；每小题2分，共10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。
1. When does the play start?
A. At 6:30.
B. At 8:00.
C. At 6:00.
2. How many letters does he write to his mother in a month?
A.8.
B.4.
C.2.
3. Who do you think broke the rule?
A. Lucy.
B. Uncle Jim.
C. Tom.
4. What can we learn from the conversation?
A. The man couldn’t find a parking lot.
B. It was hard to find a place to leave the car.
C. The woman was worried about her late arrival.
5. What does the man suggest?
A. Exercising just after getting up.
B. Eating something good for breakfast.
C. Trying to be the first to get up.
第二节：(共10小题；每小题2分，共20分)
听下面4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。
听第6段材料，回答第6、7题。
6. Why does the son refuse to have the fish at first?
A. He thinks it is too expensive.
B. He doesn’t like fish.
C. It’ll make him put on weight in his opinion.
7.Which of the following is true?
A. The mother doesn’t think his son is fat.
B. Fish is high in fat.
C. The son is fond of fish in fact.
听第7段材料，回答第8~10题
8.The professor wanted to watch the monkey .
A. look for the food
B. look for the small boxes
C. move the boxes
9.After the professor left the room, the monkey began to .
A. lock the door
B. look at the keyhole
C. put one of its eyes to the keyhole
10.What surprised the professor?
A. The monkey was on the other side of the door.
B. The monkey was watching him through the keyhole.
C. The monkey found the food.
听第8段材料，回答第11、12题。
11.How long does a school day last?
A. At least 8 hours.
B. Nearly 7 hours.
C. About 6 hours.
12.How does Jack usually go to school?
A. By bus.
B. On foot.
C. By bike.
听第9段材料，回答第13~15题。
13.What does the speaker want to tell us?
A. Where Philip comes from.
B. Why Philip is here in China.
C.A general introduction about Philip.
14.When did he arrive in China?
A. Last spring
B. Last summer.
C. Last autumn.
15.Who is Philip living with?
A. His mother.
B. His parents.
C. His father.
二、单项选择(每小题1分，共15分)
16. She is so badly hurt in the head. I’m afraid as such an old lady, there is no ______ that she will
make a full recovery.
A. possibility
B. question
C. advantage
D. opinion
17. —She has eaten much less every day than before recently. I think she is ill, isn’t she?
—No. Actually she is herself to try to lose weight.
A. protecting
B. forming
C. applying
D. starving
18.The new president and his government will have to face _____ problems such as unemployment and poor health.
A. social
B. environmental
C. cultural
D. universal
19.—What do you mean by saying he told you a vivid story?
—He made us feel we had seen the whole thing our own eyes.
A. so that; in
B. as though; with
C. above all; by
D. such as; through
20.You’ll be given a warm welcome on your , Mr. Frik. We are seeing you as soon as possible, you know.
A. coming; determined to
B. agreement; interested in
. arrival; looking forward to D. returning; paying attention to
21.—Three is a big statue in the middle of the square, you see?
—Yes, it was built a boy who saved this city by putting out a big fire with his bravery and intelligence.
A. as a result of
B. in memory of
C. in return for
D. with the help of
22. —Well, where were you when the accident , Madam?
—I was just at the corner of the street waiting for my husband.
A. blew up
B. took part
C. broke down
D. took place
23. Don’t pay attention to what he says. Nothing can him—he is a man who is always
complaining.
A. gain
B. award
C. satisfy
D. admire
24. We are looking forward to your _____ us with your coming to the party.
A. to honor
B. honor
C. honoring
D. honored
25. —He always likes to _______ as an astronaut.
—_________ .
A. wear; So he does
B. put on; So does he
C. dress up; So he does
D. dress; So is he
26. Could you ______ me for my not keeping my promise?
A. sorry; word
B. pardon; word
C. forgive; promise
D. excuse; promise
江苏省启东中学高一英语上学期期中试题新人教版
高一英语试卷 （本试题分I卷和II卷，满分120分，时间为120分钟） I卷（满分90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，你都有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. How much does Emma usually spend on a haircut? A. $30. B. $13. C. $15. 2. How did Jack go to work today? A. By car. B. By bike. C. By taxi. 3. how much money was paid at first? A. $300 B. $450 C. $400 4. What does the man mean? A. He’s got no phone and he feels sorry. B. Though it’s not a public phone, the woman can use it. C. The woman can’t use it because it’s not a public phone. 5. What kind of things doesn’t the man like to buy? A. Cheap things. B. New things. C. Used things. 第二节 听下面5段对话。每段对话后有几个小题，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。每段对话读两遍。 听第6段材料，回答第6、7题。 6. What is the man going to do? A. Paint the wall. B. Plant trees. C. Empty the rubbish can. 7. What can we learn about the man? A. He is talkative. B. He is helpful. C. He is confident. 听第7段材料，回答第8--10题。 8. What do you think is the woman? A. A student. B. A person working in the office. C. A nurse. 9. Where is the woman living now? A. Outside the city. B. In the city C. Near the office. 10. Why would the woman like to find an apartment? A. Need more time to study. B. Be afraid to go home at night.
江苏省启东中学学校网站改版采购询价公告【模板】
江苏省启东中学学校网站改版采购询价 公告 询价编号: QDZX******** 江苏省启东中学根据XX市财政局、教育局采购管理的有关规定，就XX市教育体育局2020年3月5日批准的XX市教育系统政府采购项目集中采购审批表，江苏省启东中学校园网改版及网站托管维护等服务项目进行询价采购(详细内容见附表)。 说明： 一、本项目的总价最高限价为人民币伍万贰仟肆佰元柒拾伍元（52475），具体内容详见表一，报价超过最高限价的为无效报价。 二、供应商资格要求： 投标人须符合《中华人民共和国政府采购法》第二十二条的规定及《中华人民共和国政府采购法实施条例》第十七条的规定，并在投标文件中提供下列材料： （1）提供营业执照、税务登记证、组织机构代码证（或三证合一的营业执照）副本扫描件，且营业执照中有相关项目的资质。 （2）提供2019年财务审计报告的复印件(原件备查)或开户银行出具的资信证明。 （3）提供近期依法缴纳员工社会保障记录 三、报价注意事项： 1.供应商应按照本询价公告的要求编制报价文件，报价文件应对本询价公告提出的要求和条件作出实质性响应（规格、参数、数量详见表一）。否则按照不响应处理。报价中含相关附件、货物运输、税
金、质保、售后服务等所有相关费用，学校在使用过程中不增加任何 费用，请各供应商在报价时请充分考虑各种因素（如运输、送货、安 全保险等各种费用）。 2.供应商应详细阅读询价文件的全部内容，供应商对询价文件有 疑问或异议的，请在递交报价文件3日前以书面形式（加盖单位公章）递交至采购单位。 3.采购内容：江苏省启东中学校园网改版及网站托管维护等服 务。 有关技术及需求问题，请与采购单位联系。 采购单位：启东中学联系人： XXX 联系电话：******** 4.报价文件构成 （1）资质证明文件（加盖报价单位公章）：（1）法定代表人身份 证明书及法定代表人身份证复印件；（2）法定代表人授权委托书及代 理人身份证复印件（如有）；（3）企业营业执照、税务登记证、组织机 构代码证（三证合一的只提供企业营业执照）；（4）业绩证明材料（附 合同）；（5）报价清单（附表二）；（6）报价承诺书（按照附件四格式 填写） 上述资料复印件须加盖公章，材料清单依次装订成册。投标时一 次性递交资料，并提供相应原件以供审核，不接受补充资料。投标 文件一式二份（正本壹份、副本壹份）。上述材料本公告提供格式 的，请按附件中的格式填写。 报价文件中必须包含上述要求提供的所有材料，否则以未实质性 响应询价文件处理。报价文件装订成册并密封，密封袋上标明：询价 编号、项目名称、报价单位名称，否则视为无效报价。 5.报价文件递交 报价文件请于2020年 3月 30 日上午 8 ：30 - 9 ：30密封
江苏省启东中学高一必修一英语学案 Module 1 Unit 1 语言点_1
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江苏省启东中学2019-2020学年高一下学期期中考试英语试题 含答案
江苏省启东中学2019-2020学年度第二学期期中考试 高一英语试卷 第一部分：听力 第一节(共 5 小题；每小题 1.5 分，满分7.5 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。听完每段对话后，你都有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。例：How much is the shirt? A. ￡19.15. B. ￡9.15. C. ￡9.18. 答案是B。 1. How is the weather this weekend according to the weatherman? A. Warm. B. Cool. C. Cold. 2. What is the correct order number for the yellow teapot? A. TP12FS. B. TP12SF. C. PT12FS. 3. What is Martin busy doing? A. Writing a book. B. Reading about Cuba. C. Looking for good news. 4. What is the relationship between the speakers? A. Father and daughter. B. Teacher and student. C. Classmates. 5. What are the speakers mainly talking about? A. The man’s toy. B. The man’s father. C. The man’s childhood. 第二节(共15 小题；每小题 1.5 分，满分22.5 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 1
启东中学苏教版高一英语第二学期第一次考试题及答案
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江苏省启东中学2020-2021学年第二学期第一次阶段测试 高一英语 总分：150分限时：120分钟 第一部分听力（共两节，满分 20 分） 做题时，先将答案标在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。 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。听完每段对话后，你都有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 does the man ask the woman to do? A. Bring her ID card. B. Prepare a form. C. Meet him on time. 2. How much did the man spend at the store? A. $2. B. $5.6. C. $7.6. 3. Where is the man now? A. In Beijing. B. In London. C. In Paris. 4. What are the speakers mainly talking about? A. The woman?s shoes. B. Items on sale. C. A shopping mall. 5. Where does the conversation probably take place? A. At the school. B. In the hospital. C. At home. 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。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6段材料，回答第6、7题。 6. When does the class the man chose begin? A. At 2:00 p.m. B. At 4:00 p.m. C. At 6:00 p.m. 7. What does the woman probably do? A. A receptionist. B. A Chinese teacher. C. A student. 听第7段材料，回答第8至10题。 8. How will the woman get to the meeting place? A. By car. B. By train. C. By plane. 9. What will the woman do after the meeting? A. Work overtime. B. Go for a vacation. C. Stay at home. 10. What is the probable relationship between the speakers? A. Friends. B. Employer and employee. C. Colleagues. 听第8段材料，回答第11至13题。 11.What will the man do this Friday? A. Watch a play. B. Give a performance. C. Watch a movie. 12. Why did the speakers miss the new Marvel movie?
【100所名校】江苏省启东中学2017-2018学年高一下学期第一次月考数学试题(解析版)
江苏省启东中学2017-2018学年高一下学期第一次月考 数 学 注意事项： 1．答题前，先将自己的姓名、准考证号填写在试题卷和答题卡上，并将准考证号条形码粘贴在答题卡上的指定位置. 2．选择题的作答：每小题选出答案后，用2B 铅笔把答题卡上对应题目的答案标号涂黑，写在试题卷、草稿纸和答题卡上的非答题区域均无效. 3．非选择题的作答：用签字笔直接答在答题卡上对应的答题区域内.写在试题卷、草稿纸和答题卡上的非答题区域均无效. 4．考试结束后，请将本试题卷和答题卡一并上交. 第I 卷（非选择题） 一、填空题 1．ABC ?的内角A,B,C 的对边分别为,,a b c ， 60ab =， 面积ABC S ?= ABC ? 则c =________. 2．若数列{}n a 满足( )* 1220n n n a a a n N ++-+=∈，且1 22,4a a ==，则数列{}n a 的通项公式为 n a =____________. 3．在△ABC 中， BC = ， 1AC =，且6 B π = ，则A =______． 4．在等比数列{}n a 中，已知253432,4a a a a =-+=，且公比为整数，则9a =_______. 5．若在,x y 两数之间插入3个数，使这五个数成等差数列，其公差为()110d d ≠，若在,x y 两数之间插入4 个数，使这6个数也成等差数列，其公差为()220d d ≠，那么12 d d =______． 6．已知数列{}n a 的前n 项和2 1n S n =+，则15a a += ___________． 7．设n S 是等差数列{}n a 的前n 项和， ()7193S a a =+则的 5 4 a a 值为____________. 8．已知等比数列的前n 项和为n S ，若32:3:2S S =，则公比q = ． 9．在ABC ?中，角,,A B C 的对边分别为,,a b c ， 已知2,sin ,a b B C +== sin 2 C =______________. 10．已知{}{},n n a b 均为等比数列，其前n 项和分别为,n n S T ，若对任意的* n ∈N ，总有314 n n n S T +=，则3 3 a b = ． 11．各项均为正数的等比数列{}n a 中，211a a -=．当3a 取最小值时，数列{}n a 的通项公式a n = ． 12．在ABC ?中，已知1,2,b c AD ==是A ∠的平分线， AD = ，则C ∠=________. 13．在锐角三角形ABC 中，角A,B,C 的对边分别为,,a b c ，且满足22b a ac -=，则11 tan tan A B - 的取值范围为___________. 14．已知等差数列{}n a 的公差d 不为0，等比数列{}n b 的公比q 是小于1的正有理数．若1a d =，且 222 123 123 a a a b b b ++++是正整数，则q 等于_______． 二、解答题 15．在ABC ?中， ,,a b c 分别为角A 、B 、C 的对边， （1）若,,A B C 成等差数列，求cos cos A C +的取值范围； （2）若,,a b c 成等差数列，且4cos 5B =，求11 tan tan A C +的值． 16．已知数列{a n }是首项为a 1= 14，公比q=14的等比数列，设14 23log n n b a +=（n ∈N *），数列{c n }满足c n =a n ?b n （1）求证：{b n }是等差数列； （2）求数列{c n }的前n 项和S n ． 17．已知数列{}n a 的首项为2，前n 项和为n S ，且() *1112.41 n n n n N a a S +-=∈-. （1）求2a 的值； （2）设1n n n n a b a a += -，求数列{}n b 的通项公式； （3）求数列{}n a 的通项公式； 18．如图，半圆O 的直径为2， A 为直径延长线上的一点， 2OA =， B 为半圆上任意一点，以AB 为一边作等边三角形ABC ，设AOB α∠= (0)απ<<. 班级 姓名 准考证号 考场号 座位号
数学江苏省启东中学2017高二下学期期中考试数学理试题Word版含答案
江苏省启东中学2017-2018学年度第二学期期中考试 高二理科数学试卷 (满分160分，考试时间120分钟) 一、填空题：本大题共14小题，每小题5分，共70分．请把答案直接填写在答题卡相应位置上．．．．．．．．． 1.函数()sin f x x x =的导数是 ▲ ． 2.若56 n n C C =，则9 n C ＝ ▲ ．（用数字作答） 3.设曲线3 y ax x =+在(1,)a 处的切线与直线260x y --=平行，则实数a 的值为 ▲ ． 4．人民路华石路口一红绿灯东西方向的红灯时间为37 s ，黄灯时间为3 s ，绿灯时间为60 s ．从西向东行驶的一辆公交车通过该路口，遇到绿灯的概率为 ▲ ． 5.函数()ln f x x x =的单调减区间是 ▲ ． 6.函数311 ()433 f x x x = -+的极大值是 ▲ ． 7.将黑白2个小球随机放入编号为1，2，3的三个盒子中，则黑白两球均不在1号盒子的概率为 ▲ ． 8.设函数()f x 的导函数为' ()f x ，若3 ' ()52(1)f x x xf =+，则' (3)f ＝ ▲ ． 9.用数字1到9组成没有重复数字的三位数，且至多有一个数字是偶数，这样的四位数一共有 ▲ 个．（用数字作答） 10.已知函数3 ()27f x x x =-在区间[,1]a a +上不是单调函数，则实数a 的取值范围是 ▲ ． 11.已知两曲线()sin f x a x =，()2cos ,(,)2 g x x x π π=∈相交于点P ，若两曲线在点P 处的切线互相垂 直，则实数a 的值是 ▲ ． 12.某种圆柱形的饮料罐的容积为V ，为了使得它的制作用料最省（即表面积最小），则饮料罐的底面半 径为（用含V 的代数式表示） ▲ ． 13. 已知直线y m =，分别与直线55y x =-和曲线2x y e x =+交于点M,N 两点，则线段MN 长度的最小值是 ▲ ． 14. 已知a 为常数，函数2 (0)()1ln (0)x x f x x x x +?≤? =+??>? ，若关于x 的方程()2f x ax =+有且只有四个不同的解， 则实数a 的取值所构成的集合为 ▲ ． 二、解答题：本大题共6小题，共90分．请在答题卡指定区域．．．．．．．内作答. 解答时应写出文字说明、证明过程或演算步骤． 15．（本小题满分14分）在班级活动中，4 名男生和3名女生站成一排表演节目：（写出必要的数学式，结果用数字作答）
江苏省启东中学2018-2019学年高一英语 暑假作业 第28天 M4U3语法专练(含解析)牛津译林版
第28天M4U3语法专练——被动语态 (建议用时：35分钟) 一、单句语法填空 1. Don't take the magazine away. It ________(belong) to me. 2. If city noises ________(keep) from increasing, people will have to shout to be heard even at the dinner table 20 years from now. 3. A friend of mine ________(return) to his house after a holiday only to find it ________(break) into. 4. We miss Ted a lot, for he ________(kill) trying to save a child in earthquake. 5. Shortly after we ________(seat), a waiter came over to our table with a smile. 6. The number of the guests who ________(invite) to the wedding reaches 800. 7. The professor asked his assistant whether his report ________(complete) in a week. 8. I feel it is your husband who ________(blame) for the spoiled child. 9. Selecting a mobile phone for personal use is no easy task because technology ________(change) so rapidly. 10. You can't move in right now. The house ________(paint)． 二、单句改错 1. They believed that by using computers the production of their factory would increase greatly. 2. The price has been fallen down, but I doubt whether it will remain so. 3. By the end of last year, another new gymnasium had completed in Beijing. 4. Visitors request not to touch the exhibits. 5. While many people turn to computer for news and movies, it doesn't mean that the TV set will replace in the near future. 三、语法填空 阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。 In many places like Britain and Italy, if you leave the house without your wallet, you'll be in a tough situation all day. But in China, you can enjoy your day just
〖含高考模拟卷15套〗江苏省启东中学2020届高三下学期第一次月考(物理-理)试卷含解析
江苏省启东中学2020届高三下学期第一次月考（物理-理）试卷 一、单项选择题：本题共6小题，每小题4分，共24分。在每小题给出的四个选项中，只有一项是符合题目要求的。 1、半径相同的两个金属小球A 、B 带有等量的电荷，相隔较远的距离，两球之间的吸引力大小为F ，今用第三个半径相同的不带电的金属小球先后与A 、B 两球接触后移开，这时A 、B 两球之间作用力的大小是（ ） A ． 4 F B ． 34 F C ． 8 F D ． 38 F 2、在2018年亚运会女子跳远决赛中，中国选手许小令获得铜牌。在某一跳中，她（可看作质点）水平距离可达6.50 m ，高达1.625 m 。设她离开地面时的速度方向与水平面的夹角为α，若不计空气阻力，则正切值tanα的倒数等于（ ） A ．0.5 B ．1 C ．4 D ．8 3、如图所示，半径为R 的圆环竖直放置，长度为R 的不可伸长轻细绳OA 、OB ，一端固定在圆环上，另一端在圆心O 处连接并悬挂一质量为m 的重物，初始时OA 绳处于水平状态。把圆环沿地面向右缓慢转动，直到OA 绳处于竖直状态，在这个过程中 A ．OA 绳的拉力逐渐增大 B ．OA 绳的拉力先增大后减小 C ．OB 绳的拉力先增大后减小 D ．OB 绳的拉力先减小后增大 4、电荷之间的引力会产生势能。取两电荷相距无穷远时的引力势能为零，一个类氢原子核带电荷为+q ，核外电子带电量大小为e ，其引力势能P kqe E r =- ，式中k 为静电力常量，r 为电子绕原子核圆周运动的半径（此处我们认为核外只有一个电子做圆周运动）。根据玻尔理论，原子向外辐射光子后，电子的轨道半径从1r 减小到2r ，普朗克常量为h ，那么，该原子释放的光子的频率υ为（ ）
启东中学高一第二学期第一次月考英语试卷
江苏省启东中学2008—2009学年度第二学期第一次月考高一英语试卷09.3 第Ⅰ卷 第二部分：英语知识应用（共两节，满分35分） 第一节：单项填空（共20个小题；每小题1分，满分20分） 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 21. By hiking, people can get ____ to ____nature and experience a kind of life. A. closely; / B. closely; the C. close; / D. close; the 22. --- Tom and Kate, you’ve arrived at last! Welcome! ---Yes, but you can’t imagine what difficulty we had_____ your house. A. finding B. to find C. found D. with finding 23. Another new factory has been built near _______used to be a village. A. what B. that C. which D. where 24. ---Do you like The Legend of Bruce Lee? ---Yes. I think it is popular ____ the country. A. through B. across C. over D. from 25. You have advise her not to have breakfast in order to stay slim, and this is __ __I disagree about. A. why B. which C. what D. where 26. .-----I doubt _________I’ll be chosen for the team. -----The chance is ten to one _________you will be chosen. A. that, that B. if, that C. if, whether D. whether, whether 27. ---Why did he let you repeat his instruction time and time again? ---____that I remember what ____after he went out. A. To see to it; to be done B. Making sure ; to be done C. To make sure; to do D. Seeing to; done 28. ---There must be a dozen pens in this house but I can never find one when I need one. ---Keep looking. _____is sure to turn up. A. One B. It C. That D. This 29. Friendship will not come to you naturally when you show ___ to others. A.none B. nothing C. no one D. little 30. ---It was fine yesterday. ---____. And a very nice day for fishing, isn’t it? A. So it was B. It is so C. So it is D. So is it 31. ---Do you have anything in mind ____ you’d l ike for supper? ---Well, ____is OK with me. A. that; anything B. which; everything C. what; whatever D. where; something 32. ----I think it’s going to be a big problem. ---Yes, it could be. ---I wonder ____ we can do about it.
2020届江苏省启东中学高三上学期期初考试数学试题(解析版)
2020届江苏省启东中学高三上学期期初考试数学试题 一、填空题 1．若复数z 满足i 12i z ?=+，其中i 是虚数单位，则z 的虚部为________. 2．已知点P(tan α，cos α)在第三象限，则角α的终边在第________象限． 3．设向量a =（1,0），b =（?1,m ）,若() a ma b ⊥-，则m =_________. 4．已知复数z 满足(1i)34i z +=-（i 是虚数单位），则||z =________. 5．化简：tan17tan133(tan17tan13)++=________. 6．若3 tan 4 α= ，则2cos 2sin 2αα+= __________. 7．在锐角△ABC 中，3AB =，4AC =．若△ABC 的面积为BC 的长是____． 8．已知02 π α-<<，且5 cos 13 α= ．则2cos()3sin()4cos()sin(2)παπααπα--+-+-的值为_____. 9．已知函数()2sin (0)f x x ωω=>在区间[,]34 ππ -上的最小值是2-，则ω的最小值等于____. 10．设α为锐角，若π3cos()65 α+=，则sin 212απ? ?+ ???的值为_______. 11．已知函数()()(0)6 f x sin x cos x π ωωω＝＋－＞．若函数()f x 的图象关于直线x ＝2π对称，且在区 间[,]44 ππ -上是单调函数，则ω的取值集合为______.
12．设点O 在ABC ?所在平面内，若230OA OB OC ++=，则OBC ?与ABC ?的面积比为___. 13．正方形ABCD 的边长为1，O 为正方形ABCD 的中心，过中心O 的直线与边AB 交于点M ，与边CD 交于点N ，P 为平面上一点，满足2(1)OP OB OC λλ=+-，则PM PN ?的最小值为________. 14．已知等腰直角三角形ABC 中=2AB AC =，半径为 2 的圆O 在三角形外与斜边BC 相切，P 为圆上任意一点，且满足AP xAB y AC =+，则x y +的最大值为________. 二、解答题 15．已知函数π()2sin()(0)2f x x ω?ω?=+>< ，的图像的一部分如图所示，5 (,0)2 C 是图像与x 轴的交 点，,A B 分别是图像的最高点与最低点且5AB =． （1）求函数()y f x =的解析式； （2）求函数3 1()()(),0,22g x f x f x x ?? =++∈???? 的最大值． 16．在平面直角坐标系xOy 中，设向量()cos sin a αα=，，()sin cos b ββ=-，，() 12c =-． （1）若a b c +=，求sin ()αβ-的值； （2）设5π 6 α=，0πβ<<，且()//a b c +，求β的值．
江苏省启东中学2020┄2021学年高二化学下学期期中试题创新班,含解析
江苏省启东中学2020┄2021学年度第二学期期中考试 高二化学（创新班） 可能用到的相对原子质量:P 31 O 16 H 1 选择题（40分） 一．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.化学与生活密切相关。下列说法错误的是（） Ａ． PM2.5是指粒径不大于2.5 μm的可吸入悬浮颗粒物 Ｂ．绿色化学要求从源头上消除或减少生产活动对环境的污染 Ｃ．燃煤中加入CaO可以减少酸雨的形成及温室气体的排放 Ｄ．天然气和液化石油气是我国目前推广使用的清洁燃料 【答案】C 【解析】 A项，PM2.5是指微粒直径不大于2.5 μm的可吸入悬浮颗粒物，正确；B项，绿色化学要求从源头上消除或减少生产活动对环境的污染，正确；C项，燃煤中加入生石灰可以减少硫 酸型酸雨的形成（原理为2CaO+2SO2+O2Δ 2CaSO4），但在加热时生石灰不能吸收 CO2，不能减少CO2的排放，不能减少温室气体的排放，错误；D项，天然气（主要成分为CH4）和液化石油气（主要成分为C3H8、C4H10）是我国目前推广使用的清洁燃料，正确；答案选C。 2.下列有关化学用语表示正确的是（） Ａ．聚氯乙烯的结构简式：Ｂ．硫离子的结构示意图：
Ｃ．次氯酸钠的电子式：Ｄ．葡萄糖分子的结构简式：C6H12O6【答案】C 【解析】 【详解】A项、一定条件下，氯乙烯发生加聚反应生成聚氯乙烯，聚氯乙烯的结构简式为，故A错误； B项、硫离子含有16个质子，18个核外电子，其中K层2个电子、L层8个电子、M层8个电子，结构示意图为，故B错误； C项、NaClO为离子化合物，Na+与ClO-之间形成离子键，O与Cl之间形成共价键，电子式为，故C正确； D项、葡萄糖的分子式为C6H12O6，分子中含有5个羟基和一个醛基，结构简式为： CH2OH（CHOH）4CHO，故D错误。 故选C。 【点睛】本题考查了常见化学用语的表示方法，明确常见化学用语的书写原则为解答关键。 3.下列有关物质性质及对应用途的说法正确的是（） Ａ．利用浓硫酸的脱水性，干燥氢气 Ｂ．氧化镁熔点高，可用于制造耐火材料 Ｃ．碳酸钠溶液呈碱性，可用于治疗胃酸过多 Ｄ．二氧化硅不与任何酸反应，可用石英制造耐酸容器 【答案】B 【解析】