2020-2021学年省实验高二上学期期中测试卷word版含答案
2020-2021省实验中学高二上学期期中考试卷英语第二部分阅读（共两节，满分50分）第一节（共15小题;每小题2. 5分,满分37. 5分）阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
AThe New York Aquarium (水族馆) offers a diverse collection and nice viewing experience for all our guests. Whether you’re observing penguins on t heir rocky coastline home or swimming underwater looking at a coral reef (珊瑚礁) under the water or cheering on California sea lions at the theater you’ll find plenty to see and do during your visit. Your underwater adventure is waiting for you! This summer head out to Coney Island to learn about the underwater world at the New York Aquarium.Just off the Coney Island in Brooklyn the New York Aquarium features more than 300 marine (海洋的) species such as dolphins and seals. Meet some of our mammals and fish and learn about their natural history biology and cultural roles.Total Experience TicketAdult $18.00Child (Ages 3-12) $14.00Senior (65+) $15.00Groups (at least ten visitors) $8.00﹡Includes admission to our 4-D Theater Plus General Admission.﹡Children under 3 years old are free!﹡To receive the group rate you must make a reservati on at least two weeks in advance of your group’s visit.Please call 718-741-1818.A Special Friday AfternoonAdmission on Fridays beginning at 3:00 p.m. is by donation. Suggested donation is $13 for adults $9 for children and $10 for seniors. Every dollar you give supports our work in caring for animals at the aquarium.Aquarium ParkingCar $13.00Bus $13.00Please note:﹡Due to rising costs the Wildlife Conservation Society reserves the right to change all fees without notice.﹡All Aquarium buildings and exhibits are wheelchair-accessible.﹡For further information please call 718-265-3454.23. Which animal can’t visitors probably see at the New York Aquarium?A. penguins.B. PandasC. Dolphins.D. Seals24. Six adults (including a man of 68) and two children (aged 2 and 10) are going to visit the New York Aquarium on Sunday. They will have to pay ______________ at least.A. 144B. 133C. 119D. 6425. The donation is used to ______________.A. To help the people in needB. To help the disabled visitorsC. To care for animals at the aquariumD. To help to save the endangered animals in the world.24. Which of the following statements is TRUE according to the passage?A. You can visit the New York Aquarium at 5:30 p.m. on Christmas.B. A visitor in a wheelchair can get around at the New York Aquarium.C. Visitors can enjoy free parking service on Friday.D. To enjoy the group rate visitors must make a reservation at least two weeks in advance by sending an e-mail.21.【答案】. B22.【答案】C23.【答案】C24.【答案】BBLet us suppose it is now about A. D. 2060. Let us believe it is about 45 years from now. Of course, things have changed and life is very different.V oyages to the moon are being made every day. It is as easy to take a holiday on the moon today as it was for the people in 1960 to take a holiday in Europe. At a number of scenic spots on the moon, many hotels have beenbuilt. The hotels are air-conditioned, naturally. In order that everyone can enjoy the beautiful scenery on the moon, every room has at least one picture window. Everything imaginable is provided for entertainment(娱乐) of young and old.What are people eating now? People are still eating food. They haven't yet started to take on heir (继承) supply of energy directly as electrical current or as nuclear power. They may someday. But many foods now come in pill form, and the food that goes into the pill continues to come mainly from green plants.Since there are several times as many people in the world today as there were a hundred years ago, most of our planet's surface has to be filled. The deserts are irrigated with water and pests no longer destroy crops. The harvest is always good.Farming, of course, is very highly developed. Very few people have to work on the farm. It is possible to run the farm by just pushing a few buttons now and then.People are now largely vegetarians(素食者). You see, as the number of people increases, the number of animals decreases. Therefore, the people have to be vegetarians and we are healthier both in our bodies and in our minds, and we know the causes and cure of disease and pain, and it is possible to get rid of diseases. No one has to be ill anymore, such would be our life in 2060.25. When was the passage written?A. In about A.D. 2060B. In about 1960C. In about 2014D. In about 201526. According to the passage, what will be on the moon in about A.D. 2060?A. Many tourists.B. Many other animals.C. Many plants.D. A sea.27. What will people eat then according to the passage?A. Biscuits in pill form.B. Foods in pill form.C. Foods in water form.D. Foods in gas form.25.【答案】D26.【答案】A27.【答案】BCThe government in Tibet has denied the permanent (永久的) closure of Mount Qomolangma National Nature Reserve.The announcement came after a report went viral online claiming the base camp of the world's highest mountain was "permanently closed due to heavy pollution" and caused a universal misunderstanding.Mount Qomolangma National Nature Reserve was set up in 1988. Covering an area of more than 33,819 square kilometers, it is home to one of the world's weakest ecosystems (生态系统).Kelsang, the deputy director of the Reserve Administration, said ordinary tourists were allowed to visit areas around Rongpo Monastery, almost 5,000 meters above sea level. As for travelers who have a climbing permit, they can go to the base camp at an altitude of 5,200 meters. The mountaineering activities have been permitted by the regional forestry department.To conserve the environment surrounding Mount Qomolangma, China carried out three major cleanups at an altitude of 5,200 meters and above last spring, collecting eight tonnes of household wastes, human wastes and mountaineering trash. This year, the clean-up will continue, and the remains of mountaineering victims (受害者) above 8,000 meters will be centrally dealt with for the first time. Meanwhile, the number of people who stay at the base camp will be kept under 300.Recently, there are 85 wildlife protectors in the reserve, and 1,000 herders have part-time jobs going around and cleaning up garbage."These measures aim to strike a balance between various demands such as environmental protection, local poverty relief, mountaineering and education," said Wang Shen, county chief of Dingri at the mountain foot.28. Which of the following can replace the underlined words "went viral" in Paragraph 2?A. Spread wild.B. Blocked out.C. Gave away.D. Shot up.29. What can we learn according to Kelsang's words about the national nature reserve?A. Most tourists are allowed to visit the base camp.B. The climbing permit is a must for visitors going to the base camp.C. The mountaineering activities are not allowed these days.D. The areas above 5,200 meters are open to everyone.30. Why did the government carry out clean-ups at an altitude of 5,200 meters and above?A. To provide a much easier path for mountaineers.B. To keep mountaineering activities going smooth.C. To remove the remains of mountaineering victims.D. To protect the environment of Mount Qomolangma.31. How many people are involved in the cleaning up activities at present?A. 300.B. 1,000.C. 85.D. 1,085.28.【答案】A29.【答案】B30.【答案】D31.【答案】DD“Baby signing” classes established to improve language skills actually make little difference to children's development, according to new research. Scholars claimed (声称) there was no evidence that the lessons—in which babies are taught simple gestures to communicate their everyday needs—enable children to talk quicker than others.In a three-year study, it was claimed that the method could make mothers more responsive to their children's behaviors but failed to actually increase babies' vocabulary. An active home environment in which parents regularly talk to their children was much more effective, researchers warned. The conclusions will cast doubt on the movement—born in the United States—which has proved hugely popular among middle-class parents.Baby signing is now a multi-million pound industry, with thousands of mothers and fathers paying for classes, books and DVDs. Young children are taught simple gestures for words and phrases to communicate their everyday needs, such as “milk” “more” “all gone” “food” and “tired”. It is claimed that the technique brings great benefits, including improving t he relationship between mother and child, helping language development and even think “ if I don't do it and everyone else does, I must be a bad mother .”Nevertheless, baby signing experts barely sustained the findings. Wendy Moat, 45, who has been running baby signing classes for three years, said that the classes encouraged speech development, and may help develop a higher IQ. She said many mums say that their children talk so well because they did baby signing when they were babies. Parents wouldn't say it if they don't believe it."32.Which of the following may help improve children's language skills?A. Using simple words and phrases.B. Talking to them as much as possible.C. Buying them more books and DVDs.D. Creating a serious home environment.33.According to Paragraph 4. some new mothers choose baby signing classes in that_______.A. they are influenced by othersB. they are sure of the effects of themC. they don't want to be looked down uponD. they don't know how to teach their children34.The underlined word "sustained" in the last paragraph means "A. obtainedB. soughtC. approved ofD. figured out35.What's the main idea of the text?A. How to teach children to communicate effectively.B. Baby signing classes increase children's intelligence.C. How to improve the relationship between mother and child.D. Baby signing classes fail to improve children's language skills.【答案】BACD第二节（共5小题海小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。
2020-2021学年江苏省南京市高二上学期期中调研测试数学试题 Word版
南京市2020－2021学年度第一学期期中调研测试高 二 数 学2020.11注意事项：1．本试卷共6页，包括单项选择题（第1题~第8题）、多项选择题（第9题~第12题）、填空题（第13题~第16题）、解答题（第17题~第22题）四部分．本试卷满分为150分，考试时间为120分钟．2．答卷前，考生务必将自己的学校、姓名、考生号填涂在答题卡上指定的位置． 3．作答选择题时，选出每小题的答案后，用2B 铅笔在答题卡上将对应题目选项的答案信息点涂黑；如需改动，用橡皮擦干净后，再选涂其他答案．答案不能答在试卷上． 4．非选择题必须用黑色字迹的钢笔或签字笔作答，答案必须写在答题卡各题目指定区域内，在其他位置作答一律无效．一、单项选择题：本大题共8小题，每小题5分，共40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，请把答案填涂在答题卡相应位置上．1．在平面直角坐标系xOy 中，已知抛物线x 2＝2y 的焦点为F ，准线为l ，则点F 到直线l 的距离为A ．12B ．1C ．2D ．42．已知向量a ＝(－2，3，－1)，b ＝(4，m ，n )，且a ∥b ，其中m ，n ∈R ，则m ＋n ＝ A ．4 B ．－4 C ．2 D ．－2 3．若sin θ＝2cos(π－θ)，则tan(θ＋π4)的值为 A ．3 B ．13C ．－3D ．－134．在平面直角坐标系xOy 中，若椭圆C ：x 29＋y 2m ＝1与双曲线T ：x 2－y 2m ＝1有相同的焦点，则双曲线T 的渐近线方程为 A ．y ＝±14x B ．y ＝±12xC ．y ＝±4xD ．y ＝±2x5．在平面直角坐标系xOy 中，直线x ＋2y －4＝0与两坐标轴分别交于点A ，B ，圆C 经过A ，B ，且圆心在y 轴上，则圆C 的方程为A ．x 2＋y 2＋6y －16＝0B ．x 2＋y 2－6y －16＝0C ．x 2＋y 2＋8y －9＝0D ．x 2＋y 2－8y －9＝06．如图，已知圆柱的底面半径为2，与圆柱底面成60°角的平面截这个圆柱得到一个椭圆，则该椭圆的焦距为A ．2 2B ．2 3C ．42D ．437．如图，在三棱柱ABC －A 1B 1C 1中，BC 1与B 1C 相交于点O ，∠A 1AB ＝∠A 1AC ＝60°， ∠BAC ＝90°，A 1A ＝3，AB ＝AC ＝2，则线段AO 的长度为 A ．292B ．29C ．232D ．23 8．在平面直角坐标系xOy 中，已知双曲线C ：x 2a 2－y 2b 2＝1(a ＞0，b ＞0)的左焦点为F ，点M ，N 在双曲线C 上．若四边形OFMN 为菱形，则双曲线C 的离心率为 A ．3－1 B ．5－1 C ．3＋1 D ．5＋1二、多项选择题：本大题共4小题，每小题5分，共20分．在每小题给出的四个选项中，有多项符合题目要求，请把答案填涂在答题卡相应位置上．全部选对得5分，部分选对得3分，不选或有错选的得0分．9．已知两个不重合的平面α，β及直线m ，下列说法正确的是A ．若α⊥β，m ⊥α，则m ∥βB ．若α∥β，m ⊥α，则m ⊥βC ．若m ∥α，m ⊥β，则α⊥βD ．若m ∥α，m ∥β，则α∥β10．在平面直角坐标系xOy 中，F 1，F 2分别为椭圆 x 24＋y 22＝1的左、右焦点，点A 在椭圆上．若△AF 1F 2为直角三角形，则AF 1的长度可以为 A ．1B ．2C ．3D ．411．如图，直线l 1，l 2相交于点O ，点P 是平面内的任意一点，若x ，y 分别表示点P 到l 1，l 2的距离，则称(x ，y )为点P 的“距离坐标”．下列说法正确的是 A ．距离坐标为(0，0)的点有1个 B ．距离坐标为(0，1)的点有2个NP l 1（第6题）C 1（第7题）ABCB 1OC ．距离坐标为(1，2)的点有4个D ．距离坐标为(x ，x )的点在一条直线上12．20世纪50年代，人们发现利用静态超高压和高温技术，通过石墨等碳质原料和某些金属反应可以人工合成金刚石．人工合成金刚石的典型晶态为立方体（六面体）、八面体和立方八面体以及它们的过渡形态．其中立方八面体（如图所示）有24条棱、12个顶点、14个面（6个正方形、8个正三角形），它是将立方体“切”去8个“角”后得到的几何体．已知一个立方八面体的棱长为1，则A ．它的所有顶点均在同一个球面上，且该球的直径为2B ．它的任意两条不共面的棱所在直线都相互垂直C ．它的体积为523D ．它的任意两个共棱的面所成的二面角都相等三、填空题：本大题共4小题，每小题5分，共20分．请把答案填写在答题卡相应位置上． 13．在平面直角坐标系xOy 中，已知直线l 1：x ＋ay ＝0和直线l 2：2x －(a －3)y －4＝0，a ∈R ．若l 1与 l 2平行，则l 1与 l 2之间的距离为▲________．14．在空间直角坐标系中，若三点A (1，－1，a )，B (2，a ，0)，C (1，a ，－2)满足(AB →－2AC →)⊥BC →，则实数a 的值为▲________．15．词语“堑堵”、“阳马”、“鳖臑”等出自中国数学名著《九章算术·商功》，是古代人对一些特殊锥体的称呼．在《九章算术·商功》中，把四个面都是直角三角形的四面体称为“鳖臑”．现有如图所示的“鳖臑”四面体P ABC ，其中P A ⊥平面ABC ，P A ＝AC ＝1，BC ＝2，则四面体P ABC 的外接球的表面积为▲________．16．早在一千多年之前，我国已经把溢流孔技术用于造桥，以减轻桥身重量和水流对桥身的冲击．现设桥拱上有如图所示的4个溢流孔，桥拱和溢流孔轮廓线均为抛物线的一部分，且四个溢流孔轮廓线相同．建立如图所示的平面直角坐标系xOy ，根据图上尺寸，溢流孔ABC 所在抛物线的方程为▲________，溢流孔与桥拱交点A 的横坐标．．．为▲________．（第12题）ABC P（第15题）第16题四、解答题：本大题共6小题，共70分．请在答题卡指定区域内作答，解答时应写出必要的文字说明，证明过程或演算步骤． 17．（本小题满分10分）在 ①sin(A －B )＝sin B ＋sin C ；②2a cos C ＝2b ＋c ；③△ABC 的面积S ＝34(a 2－b 2－c 2) 三个条件中任选一个，补充在下面的问题中，并解答该问题．已知△ABC 的内角A ，B ，C 的对边分别为a ，b ，c ，__________，D 是边BC 上的一点，∠BAD ＝π2，且b ＝4，c ＝2，求线段AD 的长．注：如果选择多个条件分别解答，按第一个解答计分．18．（本小题满分12分）在平面直角坐标系xOy 中，已知圆F ：(x －2)2＋y 2＝1，动圆M 与直线l ：x ＝－1相切且与圆F 外切．（1）记圆心M 的轨迹为曲线C ，求曲线C 的方程；（2）已知A (－2，0)，曲线C 上一点P 满足P A ＝2PF ，求∠P AF 的大小．19．（本小题满分12分）如图，在直三棱柱ABC －A 1B 1C 1中，D 为AC 中点． （1）求证：B 1A ∥平面C 1BD ；（2）若AA 1＝AB ＝3，BC ＝4，且AB ⊥BC ，求三棱锥B －B 1C 1D 的体积．20．（本小题满分12分）在平面直角坐标系xOy 中，已知圆O ：x 2＋y 2＝1，点A ，B 是直线x －y ＋m ＝0(m ∈R )与圆O 的两个公共点，点C 在圆O 上．（1）若△ABC 为正三角形，求直线AB 的方程；（2）若直线x －y －3＝0上存在点P 满足AP →·BP →＝0，求实数m 的取值范围．DBB 1A 1（第19题）C 1AC21．（本小题满分12分）如图，在四棱锥P -ABCD 中，平面P AB ⊥平面ABCD ，P A ⊥AB ，P A ＝AD ＝4， BC ∥AD ，AB ⊥AD ，AB ＝BC ＝2，→PE ＝λ→PC (0≤λ＜1)． （1）若λ＝12，求直线DE 与平面ABE 所成角的正弦值；（2）设二面角B -AE -C 的大小为θ，若|cos θ|＝23417，求λ的值．22．（本小题满分12分）在平面直角坐标系xOy 中，已知椭圆C ：x 2a 2＋y 2b 2＝1(a ＞b ＞0) 的左顶点与上顶点的距离为23，且经过点(2，2)．（1）求椭圆C 的方程；（2）直线l 与椭圆C 相交于P ，Q 两点，M 是PQ 的中点．若椭圆上存在点N 满足 ON →＝3MO →，求证：△PQN 的面积S 为定值．（第21题）PABCDE（第22题图）南京市2020－2021学年度第一学期期中调研测试高二数学参考答案 2020.11一、单项选择题：本大题共8小题，每小题5分，共40分．1．B 2．B 3．D 4．D 5．A 6．D 7．A 8．C 二、多项选择题：本大题共4小题，每小题5分，共20分． 9．BC 10．ABC 11．ABC 12．ACD三、填空题：本大题共4小题，每小题5分，共20分． 13． 2 14．－92 15．4π 16．y ＝－536(x －14)2，14013四、解答题：本大题共6小题，共70分． 17．（本小题满分10分） 解：选①．由条件① sin(A －B )＝sin B ＋sin C ，在△ABC 中，A ＋B ＋C ＝π，所以sin(A －B )＝sin B ＋sin(A ＋B )，即 sin A cos B －cos A sin B ＝sin B ＋sin A cos B ＋cos A sin B ， ……………… 2分 从而sin B ＝－2cos A sin B ．因为B 为三角形内角，所以sin B ≠0，所以cos A ＝－12．因为A 为三角形内角，所以A ＝2π3． ……………… 4分在△ABC 中，因为b ＝4，c ＝2， 故由正弦定理b sin B ＝c sin C得4sin C ＝2sin B ，即2sin C ＝sin B ， 所以sin B ＝2sin C ＝2sin(π3－B )＝3cos B －sin B ，即2sin B ＝3cos B ．由sin B ≠0知cos B ≠0，因此tan B ＝sin B cos B ＝32． ……………… 8分因为∠BAD ＝π2，所以AD ＝AB ·tan B ＝3． ……………… 10分选②．由条件②2a cos C ＝2b ＋c ，结合余弦定理得2a ×b 2＋a 2－c 22ab＝2b ＋c ，即 a 2＝b 2＋c 2＋bc ， ……………… 2分 所以cos A ＝b 2＋c 2－a 2 2bc ＝－12，因为A 为三角形内角，所以A ＝2π3． ……………… 4分在△ABC 中，因为b ＝4，c ＝2， 故由正弦定理b sin B ＝c sin C得4sin C ＝2sin B ，即2sin C ＝sin B ， 所以sin B ＝2sin C ＝2sin(π3－B )＝3cos B －sin B ，即2sin B ＝3cos B ．由sin B ≠0知cos B ≠0，因此tan B ＝sin B cos B ＝32． ……………… 8分因为∠BAD ＝π2，所以AD ＝AB ·tan B ＝3． ……………… 10分选③．由条件③，△ABC 的面积S ＝34(a 2－b 2－c 2)， 得12bc sin A ＝34(－2bc cos A )，即sin A ＝－3cos A ， ……………… 2分 因为A 为三角形内角，所以sin A ≠0，从而cos A ≠0，所以tan A ＝sin A cos A ＝－3，所以A ＝2π3． ……………… 4分在△ABC 中，因为b ＝4，c ＝2， 故由正弦定理b sin B ＝csin C得4sin C ＝2sin B ，即2sin C ＝sin B ， 所以sin B ＝2sin C ＝2sin(π3－B )＝3cos B －sin B ，即2sin B ＝3cos B ．由sin B ≠0知cos B ≠0，因此tan B ＝sin B cos B ＝32． ……………… 8分因为∠BAD ＝π2，所以AD ＝AB ·tan B ＝3． ……………… 10分另解：A ＝2π3（略）……………… 4分在△ABC 中，因为b ＝4，c ＝2，由余弦定理得a 2＝b 2＋c 2－2bc cos A ＝42＋22－2×4×2×cos 2π3＝28，所以a ＝27．……………… 6分 由正弦定理得a sin A ＝bsin B ，则sin B ＝b sin A a ＝4×sin2π327＝217，又B 为锐角，所以cos B ＝1－sin 2B ＝277，则tan B ＝sin B cos B ＝32．……… 8分 在△ABD 中，因为∠BAD ＝π2，所以AD ＝AB ·tan B ＝3． ……………… 10分18．（本小题满分12分）解：（1）设M (x ，y )，圆M 的半径为r ．由题意知，MF ＝r ＋1，M 到直线l 的距离为r ．方法一：点M 到点F (2，0)的距离等于M 到定直线x ＝－2的距离，根据抛物线的定义知，曲线C 是以F (2，0)为焦点，x ＝－2为准线的抛物线． 故曲线C 的方程为y 2＝8x ． ……………………6分 方法二：因为MF ＝(x －2)2＋y 2＝r ＋1，|x ＋1|＝r ，x ＞－1， 所以(x －2)2＋y 2＝x ＋2，化简得y 2＝8x ，故曲线C 的方程为y 2＝8x ． ……………………6分 （2）方法一：设P (x 0，y 0)，由P A ＝2PF ，得(x 0＋2)2＋y 02＝2[(x 0－2)2＋y 02]， ……………………8分 又y 02＝8x 0，解得x 0＝2，故P (2，±4)， ……………………10分 所以k P A ＝±1，从而∠P AF ＝π4． …………………12分方法二：过点P 向直线x ＝－2作垂线，垂足为Q ．由抛物线定义知，PQ ＝PF ，所以P A ＝2PQ ， ……………………8分 在△APQ 中，因为∠PQA ＝π2，所以sin ∠QAP ＝PQ P A ＝ 22， ……………………10分从而∠QAP ＝π4，故∠P AF ＝π4． …………………12分19．（本小题满分12分）（1）证明：连结B 1C 交BC 1于点O ，连结OD ． 在三棱柱ABC －A 1B 1C 1中，BC ＝B 1C 1，BC ∥B 1C 1，所以四边形B 1BCC 1为平行四边形，所以O 为B 1C 中点． 又因为D 为AC 中点， 所以OD 为△CB 1A 的中位线，所以B 1A ∥OD ． …………………3分 又因为B 1A ⊄平面C 1BD ，OD ⊂平面C 1BD ，所以B 1A ∥平面C 1BD ． …………………5分 （2）解：方法一：三棱锥B －B 1C 1D 的体积就是三棱锥D －BB 1C 1的体积． …7分过点D 作DE ⊥BC ，垂足为E ．在直三棱柱ABC －A 1B 1C 1中，B 1B ⊥平面ABC ．B 1（第19题）A 1C 1BDAC OE因为DE ⊂平面ABC ， 所以B 1B ⊥DE ．又因为DE ⊥BC ，且B 1B ，BC ⊂平面B 1BCC 1，B 1B ∩BC ＝B ， 所以DE ⊥平面B 1BCC 1，即DE 为三棱锥D －BB 1C 1的高． ………9分在△ABC 中，AB ＝3，BC ＝4，且AB ⊥BC ， 所以AC ＝32＋42＝5，sin C ＝35，在Rt △DEC 中，DC ＝12AC ＝52，所以DE ＝DC ×sin C ＝32．又△BB 1C 1的面积S ＝12×BB 1×B 1C 1＝12×3×4＝6，所以三棱锥D －BB 1C 1的体积V ＝13×S ×DE ＝3，故三棱锥B －B 1C 1D 的体积等于3．………12分方法二：三棱锥B －B 1C 1D 的体积就是三棱锥B 1－BDC 1的体积． ………7分 因为（1）中已证B 1A ∥平面C 1BD ，所以B 1到平面BDC 1的距离等于A 到平面BDC 1的距离． 因此三棱锥B 1－BDC 1的体积等于三棱锥A －BDC 1的体积， 即等于三棱锥C 1－ABD 的体积．在直三棱柱ABC －A 1B 1C 1中，C 1C ⊥平面ABC ， 所以C 1C 为三棱锥C 1－ABD 的高．………10分因为AB ＝3，BC ＝4，且AB ⊥BC ，S △ABC ＝12×AB ×BC ＝6．因为D 是AC 的中点，所以△ABD 的面积S ＝12S △ABC ＝3．故三棱锥C 1－ABD 的体积V ＝13×S ×C 1C ＝3，即三棱锥B －B 1C 1D 的体积等于3．………12分20．（本小题满分12分）解：（1）由△ABC 为正三角形，得∠AOB ＝2∠ACB ＝2π3，所以∠ABO ＝∠BAO ＝π6，所以原点O 到直线AB 的距离d ＝1×sin π6＝12． ………3分由点到直线的距离公式得|m |2＝12，解得m ＝22或－22．所以直线AB 的方程为2x －2y ＋2＝0或2x －2y －2＝0． ………5分 （2）方法一：设A (x 1，y 1)，B (x 2，y 2)，P (x ，y )． 因为AP →·BP →＝0，所以点P 在以AB 为直径的圆上．记该圆圆心为(x 0，y 0)，则⎩⎨⎧x ＝x 0，y ＝y 0是方程组⎩⎨⎧x ＋y ＝0，x －y ＋m ＝0的解，解得⎩⎨⎧x 0＝－m 2，y 0＝m 2．故以AB 为直径的圆的方程为(x ＋m 2)2＋(y －m 2)2＝1－m 22，其中－2＜m ＜2． …9分又点P 在直线x －y － 3 ＝0上，即直线与圆有公共点， 所以|m ＋3|2≤1－m 22，即2m 2＋23m ＋1≤0．解得－3＋12≤m ≤1－32． 综上，实数m 的取值范围是[－3＋12，1－32]． ………12分方法二：设A (x 1，y 1)，B (x 2，y 2)．联立直线AB 与圆O 方程，得⎩⎨⎧x 2＋y 2＝1，x －y ＋m ＝0，消去y 得2x 2＋2mx ＋m 2－1＝0． ①所以x 1，x 2是①的两个解，判别式△＝(2m )2－4×2×(m 2－1)＞0，即－2＜m ＜2， 且x 1＋x 2＝－m ，x 1x 2＝m 2－12．………7分设点P (x ，y )，则AP →＝(x －x 1，y －y 1)，BP →＝(x －x 2，y －y 2)． 由AP →·BP →＝0，得(x －x 1) (x －x 2)＋(y －y 1) (y －y 2)＝0， ②将y ＝x －3，y 1＝x 1＋m ，y 2＝x 2＋m 代入②，整理得2x 2－2(x 1＋x 2＋m ＋3)x ＋2x 1x 2＋(m ＋3)(x 1＋x 2)＋(m ＋3)2＝0． 又x 1＋x 2＝－m ，x 1x 2＝m 2－12，所以2x 2－23x ＋m 2＋3m ＋2＝0，关于x 的方程2x 2－23x ＋m 2＋3m ＋2＝0有实数解， ………10分因此(－23)2－4×2×(m 2＋3m ＋2)≥0，即2m 2＋23m ＋1≤0， 解得－3＋12≤m ≤1－32． 综上，实数m 的取值范围是[－3＋12，1－32]． ………12分 21．（本小题满分12分）解：因为平面P AB ⊥平面ABCD ，P A ⊥AB ，平面P AB ∩平面ABCD ＝AB ，P A ⊂平面P AB ，所以P A ⊥平面ABCD ．因为AD ⊂平面ABCD ，所以P A ⊥AD ．又AB ⊥AD ，所以P A ，AB ，AD 两两互相垂直．以{AB →，AD →，AP →}为正交基底，建立如图所示的空间直角坐标系A -xyz ．…………2分 因为P A ＝AD ＝4，AB ＝BC ＝2，所以A (0，0，0)，B (2，0，0)，C (2，2，0)，D (0，4，0)，P (0，0，4)．（1）若λ＝12，即E 为PC 中点，则E ()1，1，2，所以DE →＝()1，－3，2，AB →＝()2，0，0，AE →＝()1，1，2． 设平面ABE 的一个法向量为m ＝(x 1，y 1，z 1)，则⎩⎪⎨⎪⎧m ·AB →＝0，m ·AE →＝0，即⎩⎪⎨⎪⎧2x 1＝0，x 1＋y 1＋2z 1＝0．令z 1＝1，得y 1＝－2，所以平面ABE 的一个法向量为m ＝(0，－2，1)． …………………4分 设直线DE 与平面ABE 所成角为α，则sin α＝|cos ＜DE →，m ＞|＝|6＋214×5|＝47035． …………………6分（2）因为PE →＝λPC →(0≤λ＜1)，则E (2λ，2λ，4－4λ)．设平面ABE 的一个法向量为n ＝(x 2，y 2，z 2)，则⎩⎪⎨⎪⎧n ·AB →＝0，n ·AE →＝0，即⎩⎪⎨⎪⎧2x 2＝0，2λx 2+2λy 2+(4－4λ)z 2＝0．令y 2＝2，得z 2＝λλ－1，所以平面ABE 的一个法向量为n ＝(0，2，λλ－1)．设平面AEC 的一个法向量为l ＝(x 3，y 3，z 3)，则⎩⎪⎨⎪⎧l ·AC →＝0，l ·AP →＝0，即⎩⎪⎨⎪⎧2x 3＋2y 3＝0，4z 3＝0．令x 3＝1，得y 3＝－1，所以平面AEC 的一个向量为l ＝(1，－1，0)． ……………………9分 （或证明CD ⊥平面P AC ，从而CD →为平面P AC 的一个法向量） 因为二面角B -AE -C 的大小为θ，且|cos θ|＝23417，得|cos ＜n ，l ＞|＝|－24＋(λλ－1)2×2|＝23417，整理得3λ2＋2λ－1＝0，解得λ＝13，或λ＝－1(舍)．所以λ＝13． ……………12分22．（本小题满分12分）解：（1）椭圆C 的左顶点(－a ，0)，上顶点(0，b )．因为左顶点与上顶点的距离为23，所以a 2＋b 2＝23，化简得a 2＋b 2＝12． ① 因为椭圆经过点(2，2)，所以4a 2＋2b 2＝1，② …………2分由①②解得a 2＝8，b 2＝4或a 2＝6，b 2＝6（舍去），所以椭圆C 的方程为x 28＋y 24＝1． …………4分（2）当PQ 斜率不存在时，N 为(±22，0)，PQ 方程为x ＝±223，易得PQ ＝823，此时S ＝12×MN ×PQ ＝12×823×823＝649． …………5分当PQ 斜率存在时，设PQ 的方程为y ＝kx ＋m (m ≠0)， 联立⎩⎪⎨⎪⎧y ＝kx ＋m ，x 28＋y 24＝1得(1＋2k 2)x 2＋4kmx ＋2(m 2－4)＝0，由△＝(4km )2－8(1＋2k 2)(m 2－4)＞0，得0＜m 2＜8k 2＋4． （*） 设P (x 1，y 1)，Q (x 2，y 2)，则x 1＋x 2＝－4km 1＋2k 2，x 1x 2＝2(m 2－4)1＋2k 2， 因此PQ 的中点M 为(－2km 1＋2k 2，m1＋2k 2)． 又因为ON →＝3MO →，所以N (6km 1＋2k 2，－3m 1＋2k 2)，将点M 代入椭圆方程，得18k 2m 24(1＋2k 2)2＋9m 24(1＋2k 2)2＝1，化简得2k 2＋1＝94m 2，符合（*）式． ……………9分记点O 到直线l 的距离为d ，则S ＝4S △OPQ ＝2PQ ×d ＝21＋k 2|x 1－x 2|×d＝21＋k 2×22×8k 2＋4－m 21＋2k 2×|m |1＋k2＝42|m |×8k 2＋4－m 21＋2k 2， 将2k 2＋1＝94m 2代入，得S ＝42|m |×9m 2－m 294m 2＝649． 综上，△PQN 的面积S 为定值649． …………12分。
2020-2021学年山东省烟台市高二(上)期中化学试卷(Word+答案)
2020-2021学年山东省烟台市高二（上）期中化学试卷一、选择题：本题共10小题，每小题2分，共20分。
每小题只有一个选项符合题意。
1．化学与生产、生活密切相关。
下列说法错误的是（）A．除去水垢中的CaSO4常用试剂有纯碱和盐酸B．食品中添加防腐剂，其使用目的与反应速率有关C．一次性锌锰碱性干电池能实现化学能与电能相互转化D．铵态氮肥不宜与草木灰混合使用的原因与盐类的水解有关2．用惰性电极分别电解下列溶液一段时间后，向剩余溶液中加入适量水能使溶液恢复到电解前浓度的是（）A．AgNO3溶液B．NaCl溶液C．CuCl2溶液D．NaHSO4溶液3．下列有关化学反应与能量的说法错误的是（）A．催化剂可以改变化学反应历程却无法改变反应的焓变B．在恒压条件下，化学反应的内能变化一定等于该反应的焓变C．化学反应过程中伴随有能量变化，并以热能、电能或光能等形式表现出来D．现正探索的新能源有太阳能、氢能、风能、地热能、海洋能和生物质能等4．氮化硅陶瓷能代替金属制造发动机的耐热部件。
工业上用化学气相沉积法制备氮化硅，其反应如下：3SiCl4（g）+2N2（g）+6H2（g）⇌Si3N4（s）+12HCl（g）△H＜0。
若在恒温恒压容器中反应，下列选项表明反应一定达化学平衡状态的是（）A．容器的压强保持不变B．v正（H2）＝2v逆（HCl）C．混合气体的平均摩尔质量保持不变D．容器内的气体c（SiCl4）：c（H2）：c（HCl）＝1：2：45．下列关于金属腐蚀和保护的说法正确的是（）A．两图中钢闸门均为电子输入的一端B．两图所示钢闸门上均主要发生了反应：2H++2e﹣═H2↑C．图1是外加电流阴极保护法，图2是牺牲阳极保护法D．金属的腐蚀会造成严重的经济损失，所以金属腐蚀对人类只有危害没有益处6．反应N2（g）+O2（g）═2NO（g）的能量变化如图所示。
已知：断开1mol N2（g）中化学键需吸收946kJ能量，断开1mol O2（g）中化学键需吸收498kJ能量。
浙江省9 1高中联盟2020-2021学年高二上学期期中考试历史试题 Word版含答案
2020 学年第一学期9十1高中联盟期中考试高二年级历史学科试题一、选择题（本大题共35题，每小题2分，共70 分。
每小题列出的四个备选项中只有一个是符合题目要求的，不选、多选、错选均不得分）1.下表是英、法、德、美工业产量排位与殖民地占有比较表，从下表中可以得出信息有①第二次工业革命使列强实力对比发生改变②列强经济实力与所占殖民地面积出现倒挂现象③国际格局已经发生根本性变化④20世纪初的世界被列强瓜分完毕A.①②B. ①③C. ②③D.②④2."军备竞赛首先表现为军费快速增长。
1883年—1908 年间，欧洲大国的军费开支平均每年增长3.25%；1908年—1913年间，平均每年增长9.92%。
到战前的1913年，德国军费开支超过20 亿马克，占国家总预算的一半；法国为15 亿法郎，占国家总预算的38%"。
关于对战前快速增长的军费开支为代表的的军备竞赛，下列观点错误的是A.一大批新式武器问世，对各国的军备竞赛产生深远的影响B. 帝国主义争霸是这场军备竞赛的原动力C.德国、法国军费开支巨大，说明两国是两大军事集团的核心力量D. 列强间的军备竞赛使欧洲处于战争爆发的前沿3.《一战全史》中"此后战争虽然持续了4年之久，德国有时也取得了一些战术上的胜利，但它的战争计划已在□□□战役中彻底破产。
德皇和毛奇在6周内击败法军，灭亡法国，成为欧洲和世界霸主的美梦，消失在□□□的波涛里，成了梦幻泡影。
"材料中的□□□是指A. 凡尔登B.马恩河C. 索姆河D. 兴登堡防线4.《第一次世界大战——大参考》写到"有些人认为，凡尔登是被索姆河战役拯救的。
从某种意义上讲，这种说法有一定的道理。
1916年7月，就在凡尔登城下的浴血厮杀进入白热化时候，索姆河两岸又燃起了战火，英法军队向德军发动了大规模进攻，这就是持续4个月之久，惨烈程度甚于凡尔登的索姆河战役。
在索姆河发动大规模攻势，是协约国集团预定的1916年战略进攻计划的一部分。
2020-2021学年山西省晋城市高二上学期期中英语测试卷 Word版含答案
2020—2021年度高二年级期中测试英语试卷姓名：考试时间：得分：本试卷共60题，共120分，共10页。
考试时间120分钟。
考试结束后，将本试卷和答题卡一并交回。
注意事项：1．答题前，请先将自己的答题卡卷头填写完整。
2．答题时请按要求用笔，作图可先使用铅笔画出。
3．请按照题号顺序在答题卡各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试卷上答题无效。
4．保持卡面清洁，不要折叠、不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。
第二部分阅读理解(共两节满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。
Popular Attractions in San FranciscoSan Francisco is a famous city in northern California on America ' s west coast , There are beautiful landmark sites such as the Golden Gate Bridge and winding Lombard Street .Golden Gate BridgeGolden Gate Bridge is the symbol and landmark of San Francisco . The Bridge sparis the entire San Francisco Bay and the Golden Gate strait of the Pacific Ocean , making it an impor tant transportation hub linking San Francisco and cities to the north . Many US movies and TV shows have been filmed here .Fisherman ' s WharfFisherman ' s Wharf is a strip extending from Ghirardelli Square all the way to Pier 3 5 and close to popular destinations such as Chinatown and the Lombard Street . Famous sites such as Alcatraz Island , Golden Gate Bridge , and the Bay Bridge can alsp be sighted in the distance . This is home to a wealth of shops and restaurants and lively street shows can be seen every - where .Lombard StreetLombard Street is so named for its multiple hairpin turns ) The 4 0 degree inclination here poses a serious challenge to driving skills . The whole street is paved with bricks and lined on either side with foliage as well as multicolored flowers , offering diverse views all around the year .Palace of Fine ArtsThe San Francisco Palace of Fine Arts was originally built to display works of art for the Panama - Pacific International Exposition in 1 9 1 5 , but was mostly rebuilt in 1 9 6 5 . Thelake and surrounding trees are also home to wildlife , such as ducks , birds and raccoons ) On top of the dusky red stone pillars stand sculptures of nymphs , which are a favorite subject ofmany photographers .21.Where should visitors go if they are movie fans ?A . Palace of Fine Arts .B . Fisherman ' s Wharf .C .Lombard Street .D . Golden Gate Bridge .22.W hat is Lombard Street named for ?A . Its sharp turnsB . The bricks .C.Multieolored flowers .D . Diverse views .23.What can visitors do at Palace of Fine Arts ?A . Appreciate lively street shows .B . Improve their driving skills .C .Take pietures of sculptures .D . Enjoy delicious food .BWatch actor Sterling K . Brown , and one of the first things you may notice is his eyes .In a scehe from the last season of The Marvelous Mrs . Maisel , Brown plays Reggie , a hard - nosed mandger . His language is rough , but his eyes reveal something more : He ' s feeling guilty and defensive . Or look at his work on NBC ' s hit drama This Is Us , where Brown plays Randall Pearson , a Black man adopted by a white family . Again , Brown ' s eyes reveal a lot .Those two performances have allowed Brown to make Emmy Awards history this year : nominsted as best lead actor in a drama series for This Is Us and best supporting actor in a comedy series for The Marvelous Mrs . Maisel on Amazon ' s Prime Video .Gratefu he is for his nominations , Brown also sees the record number of Black per - formers nominated for Emmys - about 3 4 % of acting nominees this year - as a welcome reac tion to the civil rights reckening and Black Lives Matter protests of the summer .The actor says it ' s also part of a long march toward recognition for Black performers , held back by oppression in Hollywood back to the early 1 9 0 0 s , when white people wore black - face to play Black characters in films .Brown has made history at awards shows before : in 2 0 1 8 , he became the first Black man to win best actor in a drama at both the and the Screen Actors Guild awards .With degrees from Stanford University and New York University ' s Tisch School of the Arts , Brown has spent about two decades appearing on TV shows like Lifetime ' s ArmyWives and his first series regular role , playing a cop on FX ' s short - lived 2 0 0 5 drama Starved .These days Brown is excited about the new season of This Is Us , which will begin with two episodes addressing both the coronavirns pandemic and the Black Lives Matter protests .24 . Why does the author mention the TV series in paragraph 2 ?A . To indicate that Brown is an excellent actor .B . To show that Brown has played many rolés .C . To support the idea that Brown is an eye actorD . To introduce the man topic of the passage.25 . What do we know about this year ' s Emmy Awards ?A . Brown is awarded two acting prizes .B . More black performers get nominated.C . It still doesn ' t recognize civil rights.D . Black Lives Matter is the theme .26 . What does the author intend to do in paragraph 6 to 7?A . Add some background information .B . List Brown ' s . acting experiences .C . Intrpduce a new topic for discussion .D . Summarize the previous paragraph.27 . What can be a suitable title for the text ?A . This Year ' s Emmy AwardsB . Fight for Civil RightsD.A Black Emmy NomineeD . Brown : An Eye ActorCThe long reach of the coronavirus continues to show up in the strangest ways . The iconic (偶像的,标志性的)fast - food giant KFC ,announced it 's abandoning the famous advertisin slogan , " It ' s Finger Lickin ' . Good , " because the phrase is inappropriate to use during the COVID - 1 9 outbreak .KFC announced its plans to ( stop using the slogan which it ' s been using for 6 4 years in a low - key and funny statement titled , " AND THE WINNER OF THE AWARD FOR THE MOST INAPPROPRIATE SLOGAN FOR 2 0 2 0 GOES TO KFC . "" The home of the world ' s fayorite chicken admits that the slogan is a bit fff ' for now , " the news notes , before making clear that the use of " It ' s Finger Lickin ' Good " slogan will immediately be paused in . advertising around the globe starting on August 2 4 . " This year has been like no other , and , right now , our slogan doesn ' t feel quite right . "This is not the first time that KFC has with the use of their famous ad campaign dur - ing the coronavirus . In early March , KFC a television spot running in the UK that featured actors licking their fingers . You may recall that the earliest days of the pandemic filled with nonstop reminders not to touch your face for fear of spreading the virus . Of course , there ' s the potential dan - ger of spreading virus that comes with licking your fingers before ( or after ) touching any public sur - face , such as doorknobs and the tableware at your local fast food cafe .While we are pausing the use of It ' s Finger Lickin ' Good , we assure that the food loved by so many people around the world isn ' t changing one bit , " KFC ' s global chief marketing of - ficer , Catherine Tan - Gillespie , said .For those concerned with the potential permanence of this famous fast - food phras KFC ' s statement ended on a more cheerful note , " And for all those fans . don ' t worry the slo gan will be back . Just when the time is right .28.W hat do we know about KFC’s long-lived ad slogan from the first two paragraphs?A.It is too out-of -date to use.B . It has been replaced by a new one .C . It won an award for the best slogan .D . It is not suitable for this year .29 . What did KFC do in early March this year according to paragraph 4 ?A . It stopped its long - lived ad slogan in an ad .B . It displayed its famous slogan in an ad .C . It required actors to lick their fingers in the ad .D . It reminded people not to lick their fingers .30 . Which word best describes Catherine Tan - Gillespie ' s attitude to KFC ' s future ?A . Doubtful .B . Confident .C . Disappointed .D . Concerned .31 . What can we infer about KFC from the passage ?A . It is struggling for survival in 2 0 2 0 .B . It has lost popularity among its fans .C . It may use the slogan again sometime in the future .D . It has caused potential danger of spreading virus .DThe idea of using a public bathroom with see through walls may sound like the stuff of mghimares . But a famous Japanese is hoping to change that view , using new tech - nology to make restrooms in Tokyo parks more inviting ." There are two things we worry about when entering a public restroom , especially those cated at a park , " according to architect Shigeru Ban ' s firm . " The first is cleanliness , and the second is whether anyone is inside . 'The newly - invented transparent walls can turn off both of those worries , Ban says , by showing people what awaits them inside . After users enter the restroom and lock the door , the room ' s walls turn a powdery paste ) shade and are no longer see - through .Ban ' s are sure to make for great conversation among visitors to the park - and they ' ll stand out even more after dark . " At night , the facility lights up the park like a beautiful lantern , " the architect ' s website says .The group is behind the Tokyo Toilet project , world - famous architects to create toilets " like you ' ge never seen . The project ' s eye catching toilets are part of a plan to put people ar ease when isiting a public bathroom . The project may seem silly , but the 1 6 architects who are reimagining public toilets are some of the brightest names in Japanese architecture , The list includes four Pritzker Prize winners - Ban , Toyo Ito , Tadao Ando and Fumihiko Maki - along with international stars such as Kengo Kuma and Sou Fujimoto . The fashion designer Nigo is also contributing .Ban ' s colorful public bathrooms opened to the public this month in two parks : Yoyogi Fukamachi Mini Park and Haru - no - Ogawa Community Park . Other bespoke commodes will be opening in coming months .32 . Why are people often worried before entering a public restroom ?A . Its lock is usually useless .B . It ' s usually at a huge distance .C . It ' s not always clean .D . It ' s always occupied .33 . What does the underlined word " transparent " n mean in the third paragraph ?A . Easy to see through .B . Not easy to see through .C . Full of bright colors .D . Thick and strong .34 . What do we know about the project from the last two paragraphs ?A . It ' s and silly .B . It ' s rewarding and .C . It has won the Pritzker Prize .D . It ' s the fruit of colleqtive wisdom35 . Which of the following can be the best title for the text ?A . Should the public restrooms be upgraded ?B . The new high - tech walls of public restrooms are comingC.How do we live with see - through public facilities ?D . Some famous architects designed a silly project第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
江苏省宿迁市宿迁高中2020-2021学年高二上学期期中测试语文试题 Word版含答案
江苏省宿迁市宿迁高中2020-2021学年高二上学期语文期中测试卷试卷满分（150分）考试时间（150分钟）一、现代文阅读（35分）（一）现代文阅读I（本题共5题，19分）阅读下面的文字，完成1-5题。
材料一：鲁迅先生在《中国小说的历史的变迁》中说：“自有《红楼梦》出来之后，传统的思想和写法都打破了。
”这是从中国小说发展史的视角进行高度概括的，然而传统的思想和写法究竟是怎么打破的？遗憾的是鲁迅先生并没有细说下去。
一代又一代的学者对这个问题苦苦地探寻。
我们知道，小说故事的元素是人物、情节、线索等，但如何组合，也就是结构方式，这才是创造，才能显示作家的天才。
曹雪芹正是在《红楼梦》叙事结构的组合方式这一点，打破了传统。
传统叙事的经典作品《三国演义》和《水浒传》，其时空表现形态虽各自不同，但都遵循着一个共同的叙事原则：故事时间和文本时间是一致的，文本形成的以主要的人物和主要的事件为枢纽来挽结和创建整体的时空结构，就是故事的时空结构。
所以人们习惯分析叙事的结构方式时常常集中在时间链条上，提炼出叙事的主线和副线，形成传统线性的单一的结构方式和思维方式。
《红楼梦》追求时间艺术的空间化，打破了传统线性单一的结构方式和思维方式，使历史、现实和梦幻混合、交织、重组，小说人物任意穿行在时间的隧道，在过去、现在和未来三维构成的立体时间体系中来来往往。
“现在”不是折射过去的记忆，便是投影未来的图像，有时分不清哪些是现实，哪些是幻想，并在物理时间、心理时间、梦幻时间和神话时间里进进出出。
“传统”在被打破，也体现出现代小说的叙事特征，即故事时间和叙述时间的分离，创造了小说时间艺术的多维空间形式。
这是我们过去认识不到的层面，也正是《红楼梦》叙事“新变”的内涵。
（摘编自郑铁生《<红楼梦>的故事是怎样讲的》材料二：《红楼梦》是长于写实的。
“石头”在全书第一章中答复空空道人说：“其间离合悲欢，兴衰际遇，俱是按迹寻踪，不敢稍加穿凿，致失其真。
河南省南阳市2020-2021学年高二上学期期中考试地理试题 Word版含答案
南阳市2020年秋期高中二年级期中质量评估地理试题第Ⅰ卷（选择题，共60分）一、单项选择题（每小题2分，共30个小题，共60分）下图为世界某区域示意图，甲乙为两条河流。
读图回答1—2小题。
1.在图示盛行风向期间，下列叙述正确的是A.阿尔卑斯山雪线较低B.北美高压势力强盛C．南极大陆周边浮冰多 D.日本东海岸降水量大于西海岸2．下列关于甲河的叙述，正确的是A.水位季节变化大，流量不稳定B．流域内降雨强度大，河流含沙量不大C．河流流向特点导致甲河全年会有两次凌汛D.流经盆地地区，水流平缓，货物运输量大下图表示我国某地季节性积雪融化完毕日期等值线及水系分布。
读图完成3-4小题。
3．图中①②③④四地积雪融化完毕日期最早的是A.①B．② C.③ D.④4．等值线在②处明显向北弯曲，其主要影响因素是A.纬度位置B.海陆位置C.地形D.洋流阿根廷位于南美洲南部，人口数量约4384.7万人（201 6年），人均GDP约12552美元（2016年），是南美洲养蜂业最发达、年产蜂蜜最多的国家。
蜂群集中分布在潘帕斯草原，所产蜂蜜95%出口，出口对象主要为欧美国家。
201 5年阿根廷出口蜂蜜4.4万吨，价值1.59亿美元。
201 6年阿根廷对外贸易额为1133.47亿美元，其中出口额为577.37亿美元。
主要蜜源植物有紫苜蓿、车轴草、蒲公英、油菜、白三叶草、莓柠檬等，采蜜期为每年1 1月至次年2月。
据此完成5-6各题。
5．阿根廷养蜂业的采蜜期为每年1 1月至次年2月，其原因是A.降水少，利于采蜜B.利于进口国储存C．正值农闲期 D.．正值蜜源植物开花期6．近年来潘帕斯草原的部分农场主开始放弃畜牧业生产改种马铃薯和大豆。
这种变化对养蜂业造成的影响是A.减少蜜蜂种类B.增加蜂蜜产量C.破坏蜜源植物D.提高蜂蜜质量经过多年探索，四川成都在农村地区成片成带推进“小规模、组团式、微田园、生态化”新农村综合体建设，取得显著效果。
其中“小规模”要求山地、丘陵区、坝区因地制宜控制农户数量，每个小组团控制在50户以内，人均综合用地面积控制在50-70m2。
2020-2021学年甘肃省兰州市第四片区高二上学期期中考试英语试题 Word版含答案
兰州市第四片区2020—2021学年第一学期联片办学期中考试高二年级英语学科本试卷满分120分，考试时间100分钟第一部分：阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
AFor more than two decades, France is known as the world’s most popular tourist attraction, receiving 82 million foreign tourists every year. Here are some of the best places to visit in France.MarseilleMarseille is one of Europe’s oldest cities and Franc e’s second largest city. Having a nice climate, Roman ruins, medieval architecture and cultural scenes, Marseille is also a working city with several universities and industries. One of Marseille’s best natural attractions, the Calanques are a series of small rivers with astonishing blue water and splendid cliffs. LuberonDuring the summer months, many people like to experience charming villages in Luberon. This region in central Provence took off as a tourist attraction after Peter Mayle published his books about life in Provence. With its large quantities of forests, fields of lavender（薰衣草）, farmers markets and colorfully painted houses, you'll soon see why the Luberon is such a tourist attraction.DordogneThere is just so much to see and do in Dordogne, beginning with picture-postcard villages and castles. The scenery is pretty amazing, too, with the Dordogne River running through it. The Dordogne also has some of the best ancient cave art in France. The walls of Lascaux feature mainly animals, which are a must-see.ParisAttracting more than 45 million visitors every year, Paris is the world's most popular tourist attraction. Paris, the capital city of France, is just like a little “France”. It is known for its romantic environment and commands in industries like business, entertainment, fashion, art and culture. In addition to the Eiffel Tower and Notre Dame Cathedral, Paris is also home to some of the world’s finest museums.1.What can visitors do in Marseille?A. Enjoy the romantic environment.B. Appreciate the best ancient cave art.C. Learn about the medieval architecture.D. Experience the charming fields of lavender.2. What makes Luberon a tourist attraction?A. Its latest fashion.B. Its natural scenery.C. Its splendid history.D. Its finest museums.3. Where will you go if you want to see castles?A. MarseilleB. LuberonC. ParisD. Dordogne.BWe often think of future．We often wonder what the world would be like in a hundred years’ time．Think of space, perhaps a permanent（永久的）station on the moon will have been set up．Perhaps people will be able to visit the moon as tourists．Cheap rockets for space travel will have been developed, permitting long journeys throughout the solar system（太阳系）．When that time comes, people will be taking holidays in space and visiting other planets．Great progress will have been made in medicine, too．Perhaps a cure will have been discovered for the most terrible of all diseases﹣cancer．Pollution is a problem we must solve．In a hundred years’ time it will have been controlled．All the world will have been developed﹣even Antarctica．There will be large cities inAntarctica．We already have supersonic（超音速的）flight, but in a hundred years’ time we will have supersonic land travel as well．We will have used up most of earth's land to build our cities, so floating cities will have been built. The Japanese already have plans for cities of this kind．And there will be cities under the sea．The first of these will have been completed．4.We will have developed ______ in a hundred years’ time, permitting long journeys all over the solar system．A.cheap rockets for space travelB. a planeC. a spaceshipD. a satellite5. Man will also have supersonic land travel ______．A. in a yearB. about half a century laterC. in the year 2050D. about a century later6. The last paragraph mainly talks about _______．A. we'll make good use of space on the earthB. cities under the seaC. Japan will first build floating citiesD. earth's land is in danger7. The best title for the passage is _______．A. Travel in the FutureB. Future LifeC. Where to Live in the FutureD. Space TravelCIn 2018, Pakistan promised to plant ten billion trees in an effort to slow climate change and to save a land that has been destroyed.That program, whose name is 10 Billion Trees Tsunami, has been taking effect slowly for the past two years, but it recently has received unexpected help from the coronavirus（新冠病毒）. Many Pakistanis are suddenly unemployed, so the government has given them jobs astree-planters. Unemployed day laborers have been turned into "jungle workers", planting trees for 500 rupees a day（$3）. It's not much, but it can help the unemployed get by.As the coronavirus struck Pakistan, the 10 Billion Trees campaign was halted as part of social distancing orders put in place to slow the spread of the virus. But earlier this month, the government allowed the forestry agency to restart the program and create more than 63, 600 jobs.The program is employing three times the number of planters as it normally does, and the planting season has been extended from May（its usual end）throughout June, in order to keep workers employed. All workers are being told to wear masks and keep two meters of distance from others.Shahid Rashid Awan, project director for Punjab province, said the project hopes to reach 50 million trees this year. “We can absorb all the unemployed laborers and workers who have fled the cities and returned to their villages in the past few weeks.”A study declared tree planting to be an effective way to store carbon, and if planted in large quantities around the globe, a powerful solution to climate change. While it won’t fix every climate-related problem we have, it can go a long way if done widely, which is exactly what Pakistan is trying to do with such impressive determination.And the workers will benefit greatly, too. Not only are they able to earn money and support their families at a difficult time, but they’re outside in the fresh air, away from the potential health risks from more tightly-packed urban environments. It’s a brilliant idea that all country leaders should consider copying.8.How does the coronavirus influence Pakistan?A.A lot of animals are starving.B.Many people are out of work.C.Much land is left unmanaged.D.The government has lost power.9.Which of the following best explains "halted" underlined in Paragraph 3?A.Agreed.B. Discussed.C. Stopped.D. Doubted.10. Why is the project environmentally-friendly?A. Financial support has been gained because of it.B. It has persuaded people to plant trees in big cities.C. Many laborers produce much less carbon dioxide.D. It can contribute to fighting against climate change.11. What does the author think of Pakistan's move?A. It serves as a good example.B. It is not fit for other countries.C. It is a waste of time and money.D. It brings many economic benefits.DWhen the leaves begin to change their colors and the birds head south, we know the season is starting to change. On September 7 comes White Dew (白露), the 15th solar term (节气) of the year. It indicates the beginning of the cool autumn. As the temperature falls, white dew is often seen on the grass and trees at night.For writers and poets, autumn is a difficult season to descr ibe. It’s the end of the summer, and therefore a little sad. The days seem to get shorter, and when you wake in the morning, there’s mist(薄雾) and it’s cooler. Winter is just around the corner.American writer Ernest Hemingway wrote in his book A Moveable Feast, “You expected to be sad in the fall. Part of you died each year when the leaves fell from the trees and their branches were bare (光秃秃的) against the wind and the cold, wintry light.But on the other hand, autumn has its good side. There are so many changes at this time of year, such as the colorful leaves and cooler nights. French writer Albert Camus even thought autumn was a second spring, “when every leaf is a flower.” This view is also found in the most famous autumn poem in English literature, To Autumn by John Keats. In that poem, Keats says that autumn has its own songs, just like spring.Another theme of this season is wisdom. The arrival of autumn is thought to be similar to a person becoming mature (成熟的).The great Irish poet W.B. Yeats used this idea in his poem The Wild Swans at Coole writing about the changing seasons in Coole Park in the west of Ireland. Seeing and counting 59 swans, he remembers first making the count as a young man. Seeing the swans do the same thing for all those years, he’s reminded that even though we get older, our hearts always stay the same age.12. What can be concluded about White Dew?A. It is often ignored by writers and poets.B. It is the time of year with the most rainfall.C. It is when the temperature begins to drop.D. It indicates the end of the autumn.13. A Moveable Feast was mentioned to ______.A. point out that autumn is very coldB. present the sad part of autumnC. show that winter w ill soon comeD. express sadness about the end of life14. What does “this idea” in the last paragraph refer to?A. Autumn is an important season for man.B. We can always stay young at heart.C. Autumn is related to one’s growing old.D. Nature is full of lessons to be learned.15. What’s the article mainly about?A. The solar term White Dew.B. Why autumn is a sad season.C. Autumn weather and activities.D. Famous writers’ description of autumn.第二节（共5小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
南京市2020-2021学年度第一学期期中调研测试高二语文word版含答案
南京市2020~2021学年度第一学期期中调研测试（word版含答案）高二语文1.本试眷共8。
满分150分，考试时间为150分钟。
注意事项，考试结束后，交回答卷纸。
2.答案写在答纸上的指定位置。
一、现代文阅读(36分)(一)论述类文本阅读(本题共3小题，9分)陆游的作品主要有两方而：一方而是悲情激昂，要为国家报仇雪耻，恢复丧失的疆土，解数阅读下面的文字，完成1~3题，沦陷的人民：一方而是闲透細腻，咀嚼出日常生活的深永的滋味，熨帖出当前景物的曲折的情状。
一个宋代遗老表扬他：“前辈评宋渡南后诗，以陆务观拟杜，意在不忘中原，与拜鹃心本实同，“然而，陆游全靠郡第二方面去打动后世好几百年的读者，像清初杨大鹤的选本，方文等人的模仿，《红楼梦》香菱的摘句，无数书房和花园挂的陆游诗联都是例证。
就此造成了陆游是个“老清客”的印象，这个偏向到清末才矫正过来，读者痛心国势的衰弱，愤恨帝国主义的压迫，对陆游条一方面的作品作了极热烈的赞扬，如：“集中什九从军乐，亘古男儿一放翁!”“谁怜爱国千“扫胡尘”、“靖国难”的诗歌在北宋初就出现过。
靖康之变后，宋人的爱国作品增加了，不过，行泪，说到胡尘意不平!”陈与义、吕本中等人在这方面跟陆游显然不同。
他们只表达了对国事的忧愤或希望，并没有投身在灾难里、把生命和力量都交给国家去支配的壮志和弘愿；只束手无策地叹息或伸手求助地呼吁，并没有说自己也要来动手，要“从戎”，要“上马击贼”，能够“慷慨欲忘身”，愿意“拥马横戈”、“手枭逆践清旧京”，陆游不但写爱国、忧国的情绪，并且声明救国、卫国的胆量和决心。
譬如刘子辈的诗里说“中兴将士才无双”“男儿取封侯，赴敌如饥渴”，语气已经算比较雄壮了，然而讲的是别人，是那些“将士”和“男儿”.陆游的“鸭绿桑干尽汉天，传烽自合过祁连。
功名在子何殊我，惟恨无人快着鞭”，尽管他把自己搁后，口吻已经很含蓄温和，然而明明在这一场英雄事业里准备有自己的份儿的。
这是《诗经·秦风·无衣》的意境，是杜牧《闻庆州赵纵使君中箭身死长句)的意境，也是岳飞《满江红》的意境；在北宋像苏舜钦和郭祥正的诗里，在南北宋之交像韩驹的诗里，也偶然流露过这种“修我戈矛，与子同仇”的气魄和心情，可是从没有人像陆游那样把它发挥得淋漓耐畅，这也正是杜甫缺少的境界，所以说陆游“与拜鹃心事实同”还不算很确切，还没有认识他别开生面的地方。
山东省烟台市2020-2021学年高二上学期期中考试语文试题 Word版含答案
语文试题时间:150分钟满分：150分第Ⅰ卷阅读题甲必考题一、现代文阅读（19分,每小题3分）阅读下面的文字,完成１—３题。
中国画当体现时代精神陶小军不同的时代造就了不同的绘画风格，“时代”成为决定绘画特质的因素之一,体现时代精神,也成为中国画创新发展的动力。
作为人们主观精神的体现，绘画集中反映了社会大众的审美观念，也折射着社会的精神面貌.回望历史,新石器的彩陶,简单的几何图案中便表现着人类对自然的崇拜,充满神秘色彩.两汉时期，朴拙之外,雄强自信的气息亦显著地体现在绘画等造型艺术之中。
在时局动荡的魏晋南北朝时期,士大夫感受到生命无常，纷纷归隐山林，于自然之乐中寻求生命的意义，受这个时代自由又浪漫的精神影响,中国画不管是技法还是理论,都开始走向成熟.隋唐时期，社会呈现出兼容并蓄的繁荣景象,中国画也开始了分门别类的发展.到了宋代，中国画已经形成了山水、人物、花鸟等多个绘画门类,中国画注重营造可居可游的画境，表现出多视角的艺术风貌。
至元,郁郁不得志的汉族文人转而投身艺术，文人画精神特质初步形成.明代,生产力进一步解放，工商业繁荣，中国画艺术在世俗化和商品化的趋势中形成新的特色。
清代，随着经济的发展与工商业新贵的崛起，艺术呈现多元化特征，绘画与市场之间的关系也愈来愈微妙,越来越多的豪商大贾开始扶植画家,收藏作品，“扬州八怪”与“海派"便在这样的时代背景下发展起来。
曾几何时，中国画创作一度陷入对西方艺术的盲目推崇之中，许多创作者尝试在中国画中植入西方艺术元素,但大多数并未获得想象中的成功，其根本原因在于艺术家在文化认知上的迷茫，在文化耕耘上的不深入。
中西方艺术各自有着不同的艺术精神,彼此之间存在的是差异,而不是差距。
艺术又是相通的,所以对待西方艺术的影响,中国的艺术家应当理智对待、清醒认知。
现如今，随着文化自信的提升,中国画坛呈现出回归传统文化精神的趋势,绘画的形式亦呈现出百花齐放的状态，但客观而言，今天的中国画创作在表现时代精神、引领时代发展上还有一定不足.一方面，许多艺术家为了实现较好的经济效益，一味地迎合市场，艺术家由引领时代风尚的先锋堕落为屈从市场利益的奴仆。
河南省实验中学2020-2021学年高二上学期期中考试 物理 Word版含答案
河南省实验中学2020——2021学年上期期中试卷高二物理（时间：90分钟，满分：100分）一、选择题(本题共12小题，1~8是单选题，9~12是多选题。
每小题4分，共48分。
全部选对的得4分，选对但不全的得2分，有选错或不答的得0分)1．下列说法正确的是（）A．电场是人们假想的，不是客观存在的B．电场线就是点电荷在电场中的运动轨迹C．元电荷是指带电量最小的电荷，比如电子和质子D．当两个带电体的形状和大小对它们的相互作用力的影响可忽略时，这两个带电体就能看作点电荷2．在光滑绝缘水平面上，三个带电小球a、b和c分别位于边长为l的正三角形的三个顶点上；a、b带正电，电荷量均为q，整个系统置于方向水平的匀强电场中。
若三个小球均处于静止状态，则c球的带电量为（）A．+q B．-q C．+2q D．-2q3．如图所示，A、B、C、D、E、F为匀强电场中一个边长为10cm的正六边形的六个顶点，A、C、D三点电势分别为1.0V、3.0V、5.0V，正六边形所在平面与电场线平行.则()A．电场强度的大小为V/mB．U EF与U BC相同C．电场强度的大小为V/mD．E点的电势与C点的电势相等4．一根长为L，横截面积为S的金属棒，其材料的电阻率为ρ。
棒内单位体积自由电子数为n，电子的质量为m，电荷量为e。
在棒两端加上恒定的电压时，棒内产生电流，自由电子定向运动的平均速率为v。
则金属棒内的电场强度大小为（）A．B．C．ρnevD．5．四根完全相同的长直导线互相平行，它们的截面处于一个正方形abcd的四个顶点处，导线中通有方向如图所示的电流，若每根通电导线在正方形中点处产生的磁感应强度大小均为B，则正方形中点处实际磁感应强度的大小为（）A．0 B．2B C． B D． B6．下图中小磁针的指向正确的是()A．B．C．D．7．如图所示为某电源的伏安特性曲线，则下列结论正确的是（）A．电源的电动势为6.0VB．电源的内阻为ΩC．电流为0.2A时的外电阻是D．电源的短路电流为0.5A8．反射式速调管是常用微波器之一，它利用电子团在电场中的振荡来产生微波，其振荡原理与下述过程类似。