清河中学高三上学期双周测六试题
命题人张艳第一部分听力（共两节，满分30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1.5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，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。
例：How much is the shirt?
A. ￡19.15
B. ￡9.15
C. ￡9.18
1 What do we know about the woman?
A She feel cool.
B She?s not in a hurry .
C She?ll spend five minutes on the way.
2 What will the weather probably be like on Thursday?
A Fine.
B Foggy.
C Rainy.
3 What do we learn about the man?
A He is too tired to do the experiment.
B He will write a report on the movie.
C He?s too busy for things like a film.
4 What do we learn from the conversation?
A The woman speaker has kept snakes in the cage.
B The man doesn?t like snakes.
C The man is considering keeping snakes as pets.
5 What will the woman do tomorrow?
A She?ll visit her mother in the hospital.
B She will see the doctor.
C She?ll stay in the office for inspection.
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6段材料，回答第6、7题。
6 What are the speakers talking about?
A A basketball match.
B The girl?s work.
C The exam.
7 What do we learn about the woman?
A She is interested in football.
B She hasn?t worked hard enough.
C She has spent too much time watching football.
听第7段材料，回答第8至10题。
8 What are they talking about in the dialogue?
A Football stars.
B NBA.
C Yaoming.
9 What is the true according to the dialogue?
A Michael Jordan won the value player last Saturday.
B Yaoming is superior to the others.
C Jordan is the best one in the woman?s opinion.
10 How many basketball stars have been mentioned in the text?
A 3
B 4
C 5
听第8段材料，回答第11至13题。
11 When does the man start his winter holidays?
A The second or third week of December.
B Either the second or third week of January.
C The first or second week of January.
12 What sport is the man?s favorite sport?
A Skiing.
B Swimming.
C Skating.
13 Why doesn?t the woman like to spend her weekend with the man?
A Because she doesn?t like any outdoor sports.
B Because she likes to stay at home.
C Because she dislikes the cold weather.
听第9段材料，回答第14至17题。
14 Where does the conversation most probably take place?
A At home.
B In the café.
C In the office.
15 When will Laura arrive at the airport?
A At 9:30 a.m.
B At 9:30 p.m.
C At 10:30 a.m.
16 What will the speakers do on their way to pick up Laura?
A Have some coffee.
B Have the watch fixed.
C Fill up their car.
17 What will the man do next?
A Leave for the airport.
B Watch the football match.
C Get his luggage.
听第10段材料，回答第18至20题。
18 Who was murdered?
A Mr James Marsham.
B Sir Roderick Marsham.
C PC Higgins.
19 When did the murder probably happen?
A Between 10:05 and 10:20 p.m.
B Between 9: 30 and 10: 05 p. m.
C Between 9: 15 and 9: 30 p.m.
20 Where did they find the murder weapon?
A Underneath the wall safe.
B Beside the Farminster Road.
C Near the door.
第二部分：英语知识运用（共两节, 满分45分）
第一节：单项填空（共30小题；每小题0.5分，满分15分）
21.I quickly walked to the other side of the street to avoid __ him.
A.to meet
B.meeting
C.to meeting
D.having met
22. The old couple are now quite ______ because their son finished the task _____ and has come home safe.
A. ease; at ease
B. at ease; with ease
C. at ease; at ease
D. easy; with ease
23. How _______ I was when I heard the _______ news!
A. disappointing; disappointed
B. disappointed; disappointing
C. disappointing; disappointing
D. disappointed; disappointed
24. --- What do you think of the book?-- Oh, excellent. It?s worth______ a second time.
A. reading
B. being read
C. to read
D. to be read
25. Finding her car stolen, ______.
A. a policeman was asked to help
B. the area was searched thoroughly
C. it was looked for everywhere
D. she hurried to a policeman for help
26. _______ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.
A. To wait
B. Have waited
C. Having waited
D. To have waited
27. People from France do not behave in the same way _________ we Chinese people do.
A. what
B. which
C. at which
D. /
28. I really appreciate ____ to help me，but I am sure that I can manage by myself.
A you to offer
B that you offer
C your offering
D that you are offering
29. The thief took away the woman?s wallet without____.
A being seen
B seeing
C him seeing
D seeing him
30. No one can avoid ____ by advertisements.
A to be influenced
B being influenced
C influencing
D having influenced
31. My transistor radio isn…t working. It ____.
A need repairing
B needs to repair
C needs repairing
D need to be repaired
32. It is no use ____ me not to worry.
A you tell
B your telling
C for you to have told
D having told
33. Dina，________for months to find a job as a waitress，finally took a position at a local advertising agency.
A．struggling B．struggled
C．having struggled D．to struggle
34.Some children want to challenge themselves by learning a language different from________their parents speak at home.
A．what B．that C．which D．one
35.A modern city has been set up in______was a wasteland ten years ago.
A．what B．which C．that D．where
36.—Why，Jack，you look so tired!
—Well，I________the house and I must finish the work tomorrow.
A．was painting B．will be painting
C．have painted D．have been painting
37.________by his grandparents in the countryside，he isn?t a ccustomed to________in the city. A．Having brought up；live B．Grown up；living
C．Growing up；live D．Brought up；living
38.________in the leg made it impossible for me to walk as fast as usual.
A．Being injured B．To be injured
C．Having injured D．Injured
39. It was not until dark________he found_________he thought was the correct way to solve the problem.
A. that；what
B. that；that
C. when；what
D. when；that
40.It was in Beihai Park _______they made a date for the first time_________the old couple told us their love story.
A. where；where
B. where；that
C. that；where
D. that；that
41.If we are not _______ the progress we have made, we will have greater success.
A. interested in
B. strict in
C. popular with
D. content with
42.It is believed that if an event is _______, it will surely ______ the readers of the paper.
A. astonished; astonish
B. astonishing; be astonished
C. astonishing; astonish
D. astonished; be astonished
43. The police ___________the murderer everywhere when he suddenly appeared in a theatre.
A. is searching for
B. were searching for
C. are searching for
D. were searching
44.The old man was found __________on the floor_________. .
A. lying；died
B. lying；death
C. lying；dead
D. laying；dead
45. The driver will be stopped at once if he or she is found _______ over the limited speed.
A. drive
B. driving
C. to drive
D. driven
46. Was it________he said or something that he did________made her cry so sadly?
A. what；that
B. that；which
C. that；what
D. what;/
47. It was at the very beginning ________Mr.Smith made a decision_________we should send for a doctor.
A. when；which
B. that；which
C. which；that
D. that；that
48. The food served at the new restaurant looked very ________, so every passer-by wanted to have a taste.
A.invited
B. inviting
C. to invite
D. being invited
49. —What made Alice so upset?
—________.
A. Peter?s leaving without saying goodbye
B. Peter left without saying goodbye
C. Peter was leaving without saying goodbye
D. Peter had left without saying goodbye
50. ________ in a heavy rain should be an unforgettable experience.
A. Caught
B. Catching
C. Being caught
D. To catch
第二节：完形填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，掌握其大意，然后从51-70各题所给的四个选项（A、B、C和D）中，选出最佳选项。
You have waited 45 minutes for the valuable 10 minutes' break between classes.But when the bell for the next class rings，you can't __51__ how quickly time has passed.
If you are familiar with this __52__，you'll know how time flies when you are having fun and __53__ when you are bored.Now scientists have __54__ a reason why this is the case.
Scans have shown that patterns of activity in the brain __55__ according to how we focus on a task.When we are __56__，we concentrate more on how time is passing.And this makes us __57_ the clock is ticking more slowly.
In an experiment __58__ by a French laboratory,12 volunteers watched an image __59__ researchers monitored their brain activity.
The volunteers were told to __60__ concentrate on how long an image appeared，then __61__ the color of the image，and third，study both the duration and the color.The results showed that the __62__ was more active when the volunteers paid attention to __63__ subjects.
It is thought that if the brain is __64__ focusing on many aspects of a task，it has to __65__ its resources，and pays less attention to the clock.__66__，time really passes without us __67__ it，and seems to go quickly.If the brain is not so active，it concentrates its __68__ energies on monitoring the passing of time.__69__，time seems to drag.
Next time you feel bored __70__，perhaps you should pay more attention to what the teacher is saying!
51．A.guess B．learn C．believe D．doubt
52．A.view B．point C．scene D．experience
53．A.drags B．stops C．backs D．gains
54．A.thought over B．made up C．came out D．come up with 55．A.change B．develop C．grow D．slow
56．A.sleepy B．bored C．excited D．active 57．A.report B．think C．decide D．see
58．A.produced B．carried C．tried D．performed 59．A.so B．when C．while D．but
60．A.partly B．quickly C．slowly D．first
61．A.remember B．focus on C．forget D．tell apart 62．A.researchers B．experiment C．clock D．brain 63．A.much B．many C．less D．more
64．A.busy B．likely C．ready D．sure
65．A.focus B．gather C．reach D．spread
66．A.However B．Furthermore C．Therefore D．Finally
67．A.recognizing B．watching C．noticing D．counting
68．A.enough B．full C．right D．proper
69．A.In fact B．As a result C．For example D．Instead of 70．A.in class B．with work C．in mind D．of lessons
第三部分阅读理解（共20小题，满分40分）
A
People around the world watched Britain's Prince William and Kate Middleton get married. The royal wedding broke records for live streaming on the Internet. It also produced more than two million tweets(微博) on Twitter.
The ceremony took place on Friday at Westminster Abbey in London.
Kate wore a flowing white gown designed by Sarah Burton, the creative director of Alexander McQueen. William wore a red army uniform.
It was Britain's biggest wedding since William and Harry's parents, Prince Charles and Princess Diana, were married in 1981.
Nearly two thousand guests filled the church on Friday. Hundreds of thousands of people went to the streets and parks of London to watch the wedding on video screens.
Among the wedding guests were English football star David Beckham and his wife Victoria, British Prime Minister David Cameron, the king of Norway and singer Elton John.
Bahrain's crown prince(皇储) was invited but decided not to attend because of unrest in his country. Britain took back an invitation to the ambassador from Syria over violence against protesters there.
After the ceremony, the royal couple traveled to Buckingham Palace. Crowds cheered when the newlyweds appeared on a balcony greeting to them.
Later, William drove his wife out of Buckingham Palace in an open－top Aston Martin car. William and the newest member of the royal family will now be known as the Duke and Duchess of Cambridge.
Kate is twenty－nine years old. William will be twenty－nine in June. His grandmother is Queen Elizabeth. His father, Prince Charles, is first in line to become king. William, as the older son, is second in line. Kate would not become queen, however, since she is not in the royal blood line. There was a big celebration at the University of St. Andrews in Scotland. That was where William and Kate first met as art history students in 2001.
71. Which of the following is NOT true about Prince William?
A．He has been in love with Kate for about ten years.
B．He once studied in the University of St. Andrews.
C．As a prince, he is first in line to become king.
D．He once majored in art history.
72. Which of the following was absent from the wedding?
A．The Beckhams.
B．Elton John.
C．The king of Norway.
D．The crown prince of Bahrain.
73. Why can't Kate become queen despite her marriage to the prince?
A．Because she has no royal blood.
B．Because she gave up this right.
C．Because her husband is not first in line to become king.
D．Because she has become Duchess of Cambridge.
74. It is implied in the passage that ________.
A．the royal wedding was broadcast live through TV and the Internet
B．the wedding has drawn attention of the world
C．the newlyweds majored in history ten years ago
D．all the celebrities invited have attended the wedding
B
The meaning of the word “volunteer” may be a little different in different countries, but it usually means “one who offers his or her services”. There are many different ways in which people can volunteer, such as taking care of sick people, working in homes for homeless children, and picking up garbage(垃圾) from beaches and parks.Volunteers may work within their own countries or in other countries.They are often people with a strong wish to help those who are less fortunate than themselves.Volunteers don't expect any kind of pay.
At the root of volunteering is the idea that one person may have the ability to offer services that can help other people.Tracy, a good friend of mine, however, recently came back from India with a new idea of what being a volunteer means.She worked for two and a half weeks in one of Mother Teresa's homes in Calcutta.The following is her story.
“I first heard about Mother Teresa in my high school.We watched a video about her work in India and all over the world.I was so moved by her spirit to help others and her endless love for every human being that after I graduated from high school, I wanted to try her kind of work, too.So with two friends I flew to Calcutta for a few weeks.”
“I was asked to work in a home for sick people.I helped wash clothes and sheets, and prepare lunch.I also fed the people who were too weak to feed themselves and tried to cheer them up.I felt it was better to share with them than to think that I have helped them.To be honest, I don't think I was helping very much.It was then that I realized that I had not really come to help, but to learn about and experience another culture that helped improve my own understanding of life and the world.”
75．According to the text, a volunteer refers to a person who ________.
A．is willing to help those in need without pay
B．can afford to travel to different places
C．has a strong wish to be successful
D．has made a big fortune in life
76．Tracy started her work as a volunteer ________.
A．after she met Mother Teresa
B．after she finished high school
C．when she was touring Calcutta
D．when she was working in a hospital
77．Why did Tracy choose to be a volunteer?
A．She liked to work with Mother Teresa.
B．She had already had some experience.
C．She was asked by Mother Teresa to do so.
D．She wanted to follow Mother Teresa's example.
78．What is Tr acy's “new idea”(Paragraph 2)of being a volunteer?
A．Going abroad to help the sick.
B．Working in Mother Teresa's home.
C．Doing simple things to help the poor.
D．Improving oneself through helping others.
C
“Our aim is to take our art to the world and make p eople understand what it is to move，”said David Belle, the founder of parkour(跑酷)．Do you love running? It is a good exercise, yet many people find it boring. But what if making your morning jog a creative one? Like jumping from walls and over gaps, and ground rolls? Just like James Bond in the movie Casino Royale? Bond jumps down from a roof to a windowsill and then runs several blocks over obstacles on the way. It is just because of Bond's wonderful performances that the sport has become popular worldwide.
Yes, that's parkour, an extreme street sport with the aim of moving from one
point to another as quickly as possible, getting over all the obstacles in the path using only the abilities of the human body. Parkour is considered an extreme sport. As its participants dash around a city, they may jump over fences, run up walls and even move from rooftop to rooftop.
Parkour can be just as exciting and charming as it sounds, but its participants see parkour much more than that.
Overcoming all the obstacles on the course and in life is part of the philosophy(理念) behind parkour. This is the same as life. You must determine your destination, go straight, jump over all the barriers as if in parkour and never fall back from them in your life to reach the destination successfully.
A parkour lover said，“I love parkour because its philosophy has become my life, my way to do everything.”
Another philosophy we've learnt from parkour is freedom. It can be done by anyone, at any time, anywhere in the world. It is a kind of expression of trust in yourself that you earn energy and confidence.
79. Parkour has become popular throughout the world because of ________.
A．its founder, David Belle
B．the film, Casino Royale
C．its risks and tricks
D．the varieties of participants
80. The underlined word “obstacles” in Paragraph 2 is closest in meaning to “________”．
A．streets B．objects C．barriers D．roofs
81. Which of the following is true of parkour?
A．It challenges human abilities.
B．It is a good but boring sport.
C．It needs special training.
D．It is a team sport.
82. Which of the following is the philosophy of parkour?
A．Sports and extremes.
B．Excitement and freedom.
C．Dreams and success.
D．Determination and freedom.
D
To son, Cecil,
Just a quick note before I start in earnest. When I wrote this, you were 8, still a little boy. In 2002, I was called to active duty in the Marine Corps in
the war on Terrorism (恐怖主义). On the 11th of September 2001 when America was attacked, I knew that I would eventually(最终) have to go and I was filled with a deep sense of sadness. That night as you and Keiko were asleep, I looked at your little faces and couldn’t help but fight the tears. I knew it would be hard for you because I had a similar experience. When I was a little boy aged 6, my dad, your Grandpa Cawley, was sent to Vietnam during the war there. I remember how much I missed him, too. But now unfortunately I have come to realize just how difficult it must have been for Grandpa to be away from his children for a year. Thinking about this, I wanted to put my thoughts and feelings down for you and your sister. I am so sorry that I had to leave for such a long time. There is no place I would rather be than with you and Keiko. You two are the lights of my life. I have known no greater joy than in the few years since you two were born. I hope to have many more years with you. If this doesn’t happen, then know that I love you more than words can express. If for some reason I don’t make it home, I will need you to take care of your little sister and your Mom. You will be the man of the Cawley family. Be good my son and God will watch over you as he has me. I will be waiting impatiently for the time when we can all be together again.
83．The writer of the letter may be ______.
A. an American policeman
B. an American soldier in the battle field
C. a soldier in the Vietnam War
D. a postman working far away from home
84．Keiko is the ______ of the writer.
A. wife
B. son
C. daughter
D. sister
85．One of the experiences the writer and his son had in common is that ______.
A. they both experienced the Vietnam War
B. their fathers had to leave them and fight abroad.
C. they used to study in the same school
D. they were both eight when the fathers had to leave them
第二节：七选五（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。选项中有两项为多余选项。(E=AB, F=AC, G=AD)
__86__ One of the best things you can possibly do is to start you own club．It?s great fun especially if you are the sort of person who feels there?s never anything to do during the school holidays．
The first thing you need to come up with is an idea for your club．__87_ Pets,
clothes, pop music or dancing groups, sports, making things? The list is endless．Next you need some friends to be in your club with you．__88__ All you need is three or four other people who are interested in the same thing as you．__89__You should all sit down somewhere together with lots of pieces of paper and write down every name you can think up．That?ll keep you busy for ages．At your first meeting you should make up a rule book．And the first rule should be no grown-ups or little/big brothers or sisters! The best clubs are always secret!
Now you have just about everything you need, except membership cards．These are very important and again you can speed a lot of time making them．__90__ Why not leave some space for a photo of yourself? That will make the membership card really look like it．
So there you are, get clubbing! Once you get started you?ll think of loads of more interesting things to do!
A.That?s easy．
B. Enjoy your own club!
C. Invite a designer to join you．
D. What are you interest in?
E. Some vacation is just around the corner．
F. Then you need to pick a name for your club．
G. Use a bright thick pen to make a special design．
非选择题部分（共45分）
第一节：（10分）补全句子。
91.Much to my surprise, he behaved __________________________________________.
使我非常吃惊的是，他表现得好像什么也没发生过。
92._____________________________while crossing the road. 过马路时当心车辆。
93.The soldier was badly wounded but he ________________________________at last.
这个战士受了重伤但最终还是挣扎着站了起来。
94.Please ______________________________a sharp pencil and a rubber for the exam.
请准备一支削尖的铅笔和一块橡皮准备考试。
95.We ___________________________________that your application has not been successful. 我们很遗憾的通知您，您的申请未通过。
96.______________________________, the boss _________________________________ the astonishing news at all.
97.使我们非常吃惊的是，老板对这个令人吃惊的消息一点也不惊讶。
98.He _______________________________food while he doesn?t
__________________money. 他对吃的东西特别挑剔，而不在乎金钱。
99.The school ____________________________books and equipment.
这所学校相当缺乏书和设备。
100.__________________________, I __________________________________the result.
总的说来，我对这个结果很满意。
101.He _____________ a watch and _______________ to the teacher.
102.他捡到了一块手表，交给了老师。
第二节：短文改错（共10小题；每小题1分，满分10分）
Ten years ago, I had worked as a night guard in a factory. On a rainy night, all the lights of factory went out all of a sudden. I rushed out and could see nothing. Lucky for me, the warning system was directly connected with the police station. Three or four minutes late, four police car arrived at the front gate. They searched for the factory carefully, tried to find something unusual. In the end, I am told that the rain had brought about the short circuit, that caused the accident.
第三节：书面表达（满分25分）
假设你是李华，你的美国朋友Peter打算今年暑假来中国西藏旅游，请你根据下表用英语向他介绍有关西藏的情况。
归属中华人民共和国
地理位置中国西南方，被誉为世界屋脊(Roof of the World)
人口约2，800，000
面积120多万平方公里
省会拉萨(Lhasa)，被誉为世界上最高的城市
特征700多年的悠久历史；风景秀丽，有很多享誉海内外的名胜古迹，如布达拉宫（the Potala Palace）。
发展1951年5月23日解放以来，西藏在政治、经济(economy)、文化等方面都取得了很大的进步。
班级________姓名__________考号_______________
非选择题部分
第一节：（10分）补全句子。
91.Much to my surprise, he behaved __________________________________________.
使我非常吃惊的是，他表现得好像什么也没发生过。
92._____________________________while crossing the road. 过马路时当心车辆。
93.The soldier was badly wounded but he ________________________________at last.
这个战士受了重伤但最终还是挣扎着站了起来。
94.Please ______________________________a sharp pencil and a rubber for the exam.
请准备一支削尖的铅笔和一块橡皮准备考试。
95.We ___________________________________that your application has not been successful. 我们很遗憾的通知您，您的申请未通过。
96.______________________________, the boss _________________________________ the astonishing news at all.
使我们非常吃惊的是，老板对这个令人吃惊的消息一点也不惊讶。
97.He _______________________________food while he doesn?t care about money.
他对吃的东西特别挑剔，而不在乎金钱。
98.The school ____________________________books and equipment.
这所学校相当缺乏书和设备。
99.__________________________, I __________________________________the result.
总的说来，我对这个结果很满意。
100.He _____________ a watch and _______________ to the teacher.
他捡到了一块手表，交给了老师。
第二节：短文改错（共10错误；每处1分，满分10分）
Ten years ago, I had worked as a night guard in a factory. On a rainy night, all the lights of factory went out all of a sudden. I rushed out and could see nothing. Lucky for me, the warning system was directly connected with the police station. Three or four minutes late, four police car arrived at the front gate. They searched for the factory carefully, tried to find something unusual. In the end, I am told that the rain had brought about the short circuit, that caused the accident.
第三节：书面表达（满分25分）
Tibet, known as the “Roof of the World”, belongs to the People?s Republic of China._____________________________________________________________ ——————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————
双周测答案
听力：1-5 BACBA 6-10 CABCA 11-15 BACAB 16-20 CABCB
单项：21-25 BBBAD 26-30 CDCAB 31-35 CBCAA 36-40 DDAAB
41-45 DCBCB 46-50 ADBAC
完型：51-55 CCADA 56-60 BBDCD 61-65 BDDAD 66-70 CCBBA
阅读：CDAB ABDD BCAD BCB EDAFG
短文改错
1.去掉had
2.of后加the
3.and改为but
4.Lucky→Luckily
5. late→later
6. car改为cars
7.去掉for
8.tried→trying
9.am→was 10.that→which
书面表达：
One possible version:
Tibet, known as the “Roof of the World”, belongs to the People?s Republic of China and it is located in the southwest of China. It has a population of about 2.8 million, covering more than 1.2 million square kilometers. The capital city is Lhasa, which is honoured as “The highest city” in the world. With a long history of more than 700 years, Tibet has a number of world-famous places of interest, such as the Potala Palace. Since The liberation of Tibet on May 23, 1951, it has witnessed significant progress in politics, economy and culture.
江苏省梅村高级中学xx届高三元月双周练试题（生物） 2021年高三元月双周练试题（生物） 一、单项选择题：本部分题包括20题，每题2分，共计40分。每题给出的四个 选项中，只有一个 ．．．．选项最符合题意。 1、一条肽链的分子式为C 22H 34 O 13 N 6 ，其水解后共产生了下列3种氨基酸： 据此判断，下列有关叙述错误的是 A．1个C 22H 34 O 13 N 6 分子水解后可以产生3个谷氨酸 B．合成1个C 22H 34 O 13 N 6 分子同时将产生5个水分子 C．1个C 22H 34 O 13 N 6 分子中存在1个游离的氨基和3个游离的羧基 D．在细胞中合成1个C 22H 34 O 13 N 6 分子至少需要基因中36个碱基 2、右图是[H]随化合物在生物体内转移的过程，下面对其分析正确的是 A．①产生的[H]可在②过程中将五碳化合物还原 B．[H]经⑤转移到水中，其过程需CO 2 参与 C．能形成ATP的过程有①②④⑤⑥⑦ D．长在向阳坡上的小麦比背阳坡上的小麦①过程旺盛 3、将含酵母菌的葡萄糖溶液均分为4份，分别置于甲、乙、丙、丁四种条件下培养，测得CO2和O2体积变化的相对值如图。下列叙述正确的是 A．甲条件下，细胞呼吸的产物除CO2外，还有乳酸 B．乙条件下，有氧呼吸比无氧呼吸消耗的葡萄糖多 C．丙条件下，细胞呼吸产生的ATP最少 D．丁条件下，产物中的CO2全部来自线粒体 4、以洋葱为实验材料，在中学现有的生物实验条件下，可以完成的实验是 A．鳞片叶表皮细胞呈紫色，可用于光合色素的提取和分离实验 B．根尖细胞分裂旺盛，前期细胞可观察到四分体
湖北省荆州市沙市区2016-2017学年高一物理下学期第二次双周考试题（B 卷，无答案） 考试时间：2017年3月10日 一、选择题，本题共12小题，每小题4分，共计48分，9，10,11,12题为多选题,其它题为单选题1．16世纪，哥白尼根据天文观测的大量资料，经过40多年的天文观测和潜心研究，提出“日心说” 的如下四个基本论点，这四个论点目前看正确的是（） A．宇宙的中心是太阳，所有行星都在绕太阳作匀速圆周运动 B．地球是绕太阳作匀速圆周运动的行星，月球是绕地球作匀速圆周运动的卫星，它绕地球运转的同时还跟地球一起绕太阳运动 C．天穹不转动，因为地球每天自西向东自转一周，造成天体每天东升西落的现象 D．与日地距离相比，恒星离地球都十分遥远，比日地间的距离大得多 2．如图所示，人在岸上拉船，当轻绳与水平面的夹角为θ时，船的速度为v，，则此时( ) A．人拉绳行走的速度为v cos θ B．人拉绳行走的速度为v cos θ C．人做匀速运动 D．人做加速运动 3．一个物体在光滑的水平面上以初速度v做曲线运动，已知物体在运动中只受水平恒力作用，其轨迹如图所示，则物体在由M点运动到N点的过程中，速度的变化情况是（） A．逐渐增大 B．逐渐减小 C．先增大后减小 D．先减小后增大 4．关于地球的第一宇宙速度，下列表述正确的是（） A．第一宇宙速度又叫环绕速度 B．第一宇宙速度又叫脱离速度 C．第一宇宙速度跟地球的质量无关 D．第一宇宙速度跟地球的半径无关 5．小球质量为m，用长为L的轻质细线悬挂在O点，在O点的正下方 2 L 处有一钉子P，把细线沿水平方向拉直，如图所示，无初速度地释放小球，当细线碰到钉子的瞬间，设线没有断裂，则下列说法错误的是（） A.小球的角速度突然增大 B.小球的瞬时速度突然增大 C.小球的向心加速度突然增大 D.小球对悬线的拉力突然增大
湖北省荆州市2017-2018学年高二化学上学期第五次双周考试题 可能用到的相对原子质量：H 1 O 16 C 12 N 14 Na 23 Mg 24 Al 27 S 32 Cl 35.5 K 39 Ca 40 Cu 64 Zn 65 Fe 56 Ba 137 第Ⅰ卷（选择题共40分） 1.能源是国民经济和社会发展的重要物质基础，下列关于能源的说法不正确的是 A.氢能的优点是燃烧热值高，资源丰富，储存运输非常方便 B.大自然利用太阳能最成功的是植物的光合作用 C.实施“煤改气”、“煤改电”等清洁燃料改造工程，有利于保护环境 D.用甲醇、乙醇作为汽油的代用品是应对能源危机的一种有效措施 2.常温下，下列各组离子在相应的条件下可能大量共存的是 A.能使pH试纸变红的溶液中：CO32-、K+、Cl-、Na+ B.Kw/c(H+)=10-12mol·L-1的溶液中：Na+、HCO3-、Cl-、K+ C.在c(OH-)/c(H+)=l×10l2的溶液中：NH4+、Fe2+、Cl-、NO3- D.由水电离产生的c(OH-) =1×10-12mol·L-1的溶液中： NO3-、Mg2+、Na+、SO42- 3．某学生利用下面实验装置探究盐桥式原电池的工作原 理。下列说法错误的是 A.导线中电子流向为a→b B.锌电极上的电极反应式Zn－2e－===Zn2＋ C.若装置中铜电极的质量增加0.64 g，则导线中转移的电 子数目为1.204×1022 D.盐桥中的阳离子向左侧烧杯移动、阴离子向右侧烧杯移动 4.下列事实中，不能比较次氯酸与醋酸的酸性强弱的是 A.0.10 mol·L-1的次氯酸和醋酸的pH分别为4.8和3.1 B.次氯酸的导电能力低于相同浓度的醋酸 C.醋酸的稳定性强于次氯酸 D.次氯酸不能与碳酸氢钠溶液反应，而醋酸可以 5.某反应由两步反应A B C构成，它的反应能量曲线如图所示 (E1、E2、E3、E4表示活化能)。下列有关叙述正确的是
2021年高三上学期第二次统练生物试题 本试题卷分两部分，请把第一部分（选择题）答案填在机读答题卡上，第二部分（非选择题）答案填在对应科目答题卷上。满分300分，考试时间共150 分钟 第一部分（选择题118分） 一、单选题：（本题共16小题，每小题4分，共64分；在给出的四个选项中，只有一个选项符合题目要求，选对的得4分，选错或不答的得0分） 1．基因型为AabbDD的个体自交后，其后代表现型比例接近于 A、9：3：3：1 B、3：3；1：1 C、1：2：1 D、3：1 2．下列过程都不会使ADP含量增加的是： A、K+进入肾小管上皮细胞 B、暗反应中CO2的固定 C、氨基酸进入小肠绒毛上皮细胞 D、肾小管上皮细胞吸收葡萄糖 3．细胞分裂和分化过程中都能发生的是： A、复制、转录、翻译 B、染色质高度螺旋化形成染色体 C、转录和翻译 D、着丝点分裂 4．如果某人下丘脑严重受损，其身体的哪些指标可能发生异常： ①细胞外液的渗透压②组织液中的O2的含量③甲状腺激素的浓度 ④血糖浓度⑤血浆蛋白的含量⑥体温 A、①③④⑥ B、②③④⑤ C、①②③④⑥ D、①②④⑤⑥ 5. 在一个随机交配的中等大小的种群中，经调查发现控制某性状的基因型只有两种：AA基 因型的频率为40%，Aa基因型的频率为60%，aa基因型（致死型）的频率为0，那么随机交配一代后，Aa基因型的个体占: A、49/91 B、49/100 C、11/20 D、42/91 6．下列有关生物的杂交方案中，难以直接达到研究目的的是: A．用显性雌个体与隐性雄个体杂交，研究某基因是否位于X染色体上 B．用具有相对性状的纯合子杂交，研究哪个性状是显性性状 C．用测交法，研究某显性个体是否纯合 D．用正交和反交法，研究某基因是否属于核基因 二、双选题：（本题共9小题，每小题6分，共54分；在给出的四个选项中，有二个选项符
2021年高三上学期高三双周练化学试题含答案 本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。满分120分，考试时间100分钟。 可能用到的相对原子质量：H-1 C-12 O-16 Na-23 Cr-52 S-32 Cl-35.5 Fe-56 Mg-24 第Ⅰ卷(选择题共40分) 单项选择题：本题包括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、我国科学家最近指出：2050年后全球将出现的四大能源是，①氢能②天然气 水合物③空间太阳能发电④氚和氦-3的核聚变。这四大能源未来在提供能量过程 中会产生新核素的是 A．① B．② C．③ D．④ 2、下列有关化学用语表示正确的是 A．对硝基甲苯的结构简式： B．镁离子的结构示意图： C．次氯酸的电子式： D．亚硫酸钠水解的离子方程式：SO32- +2H2O H2SO3+2OH- 3、常温下，下列各组离子在指定溶液中一定能大量共存的是 A．滴入酚酞呈无色的溶液中：K＋、Al3＋、Cl－、CO32- B．澄清的溶液中：Na＋、K＋、MnO4－、AlO2－ C．＝10-13 mol·L－1的溶液：Na＋、[Ag(NH3)2]＋、OH－、NO3－ D．c(I－)＝0.1 mol·L－1的溶液中：Na＋、H＋、ClO－、SO42- 4、下列有关物质性质的应用错误 ．．的是 A．药皂中加入少量苯酚，可以起到杀菌消毒的作用 B．明矾能水解生成Al(OH)3胶体，可用作净水剂
C．为防止月饼等富脂食品氧化变质，常在包装袋中放入生石灰 D．NaHCO3受热能分解产生CO2气体，在食品工业中可作为焙制糕点的膨松剂 5、下列有关实验装置的说法中正确的是 A．用图1装置制取干燥纯净的NH3 B．用图2装置实验室制备Fe(OH)2 C．用图3装置可以完成“喷泉”实验 D．用图4装置测量Cu与浓硝酸反应产生气体的体积 6、海洋中有丰富的食品、矿产、能源、药物和水产资源等（如下图所示）。 下列有关说法不正确的是 A．从能量转换角度来看，框图中的氯碱工业是一个将电能转化为化学能量的过程 B．过程②中结晶出的MgCl2·6H2O要在HCl氛围中加热脱水制得无水MgCl2 C．在过程③⑤中溴元素均被氧化 D．过程①中除去粗盐中的SO2－4、Ca2＋、Mg2＋、Fe3＋等杂质，加入的药品顺序为：Na2CO3溶液→NaOH溶液→BaCl2溶液→过滤后加盐酸 7、设N A为阿伏加德罗常数的值，下列说法中正确的是 A．常温常压下，22.4 L乙烯中含C－H键的数目为4N A B．0.1 mol·L－1的NaHSO4溶液中含有阳离子的总数为0.2N A C．7.8 g Na2S固体和7.8 g Na2O2固体中含有的阴离子数目均为0.1N A D．标准状况下，2.24 L Cl2与过量稀NaOH溶液反应，转移的电子总数为0.2N A 8、利用如图所示装置(电极均为惰性电极)可吸收SO2，并用阴极排出的溶液吸收NO2。下列说法正确的是 A．a为直流电源的负极 B．阴极的电极反应式为： 2HSO－3＋2H＋＋e－===S2O2－4＋2H2O C．阳极的电极反应式为： SO2＋2H2O－2e－===SO2－4＋4H＋ D．电解时，H＋由阴极室通过阳离子交换膜到 阳极室 9、下列表示对应化学反应的离子方程式正确的是 A．用白醋除铁锈：Fe2O3＋6H＋===3H2O＋2Fe3＋ B．向NH4HCO3溶液中加入过量的Ba(OH)2溶液并加热： Ba2＋＋2OH－＋NH＋4＋HCO－3===== △NH 3 ↑＋2H2O＋BaCO3↓ C．用过量冷氨水吸收SO2：SO2＋NH3·H2O===HSO－3＋NH＋4 D．用强碱吸收工业制取硝酸尾气：NO＋NO2＋2OH－===2NO－3＋H2O 浓氨水 NaOH固体 图1 碱石灰 C Fe 煤油 NaOH溶液 图2 图4 水 Cl2 NaOH 溶液 图3
2021-2022年高一物理上学期第五次双周考试题 一、选择题（12小题题，共48分。1-8为单选题，9-12题为多选题，每题4分， 漏选得2分，错选得0分） 1．伽利略创造性的把实验、假设和逻辑推理相结合的科学方法，有力地促进了人类科学认识的发展.利用如图所示的装置做如下实 验：小球从左侧斜面上的O点由静止释放后沿斜面 向下运动，并沿右侧斜面上升.斜面上先后铺垫三 种粗糙程度逐渐降低的材料时，小球沿右侧斜面上升到的最高位置依次为1、2、 3.根据三次实验结果的对比，可以得到的最直接的结论是( ) A．如果斜面光滑，小球将上升到与O点等高的位置 B．如果小球不受力，它将一直保持匀速运动或静止状态 C．如果小球受到力的作用，它的运动状态将发生改变 D．小球受到的力一定时，质量越大，它的加速度越小 2．物体做直线运动，速度—时间图象如图。由图象可以判断( ) A．第1 s末物体相对于出发点的位移改变方向 B．第1 s末物体的速度改变方向 C．前2 s物体的位移之和为零 D．第3 s末和第5 s末物体的位置相同 3．如图，地面受到的弹力是（） A．物块对地面的压力与桌子对地面的压力之和B．桌子对地面的压力0 1 2 3 4 5 6 v
C ．桌子的重力 D ．物块和桌子的重力 4．物体从某一高处自由落下，落到直立于地面的轻弹簧上，如图所示。在A 点物体开始与弹簧接触，到B 点物体的速度为0，然后被弹簧弹回。下列说法中正确的是( ) A ．物体从A 下落到 B 的过程中，加速度不断减小 B ．物体从B 上升到A 的过程中，加速度不断减小 C ．物体从A 下落到B 的过程中，加速度先减小后增大 D ．物体从B 上升到A 的过程中，加速度先增大后减小 5．如图所示，在倾角为的固定光滑斜面上，有一用绳子拴着的长木板，木板上站着一只猫。已知木板的质量是猫质量的2倍。当绳子突然断开时，猫立即沿着板向上跑，以保持其相对斜面的位置不变。则此时木板沿斜面下滑的加速度为( ) A ．sin B ．g sin C ．g sin D ．2g sin 6．质量为1.5kg 的物体A 静止在竖直的轻弹簧上，质量为0.5kg 的物体B 由细线悬挂在天花板上，B 与A 刚好接触但不挤压．现突然将细线剪断，则剪断后瞬间A 、B 间的作用力大小为(g 取10m/s 2 )( ) A ．0 B ．2.5N C ．5N D ．3.75N 7．如图所示，小球A 质量为m ，木块B 质量为2m ，两物体通过轻弹簧连接竖直放置在水平面上静止.现对A 施加一个竖直向上的恒力F ，使小球A 在竖直方向上运动，经弹簧原长时小球A 速度恰好最大，已知重力加速度为g .则在木块B 对地面压力为零时，小球A 的加速度大小为( ) A.3g B.1.5g C.2g D.2.5g 8．一个物体以v 0 = 11 m/s 的初速度冲上倾角为370 的斜面，物体与斜面间的动摩擦因素为5/8。(g = 10 m/s 2 )则( ) A ．2 s 末的速度大小为11 m/s B ．2 s 内的平均速度为2.5 m/s C ．2 s 内的路程是5 m D ．第2s 内的位移大小是1 m 9．如图所示，光滑水平面上放置质量分别为m 、2m 和3m 的三个木块，其中质量为2m 和3m 的木块间用一不可伸长的轻绳相连，轻绳能承受的最大拉力为F T .现用水平拉力F 拉质量为3m 的木块，使三个木块以同一加速度运动，则以下说法正确的是( ) A ．质量为2m 的木块受到四个力的作用 A B
湖北省荆州市沙市区2017-2018学年高一政治上学期第四次双周考试 试题 一、选择题（每小题2分，共50分） 1．小夏使用信用卡在北京透支8000元购买了一台外国品牌笔记本电脑，在免息期内通过银行偿还了该消费款。在这一过程中，货币执行的职能是 A．价值尺度、支付手段和世界货币B．流通手段、贮藏手段和支付手段 C．价值尺度、流通手段和支付手段D．流通手段、价值尺度和世界货币2．“绿色、健康、环保”已成为人们关注的焦点。在服装市场，面料健康环保、生产过程无污染、产品废弃以后能够回收利用的绿色服装呈现出强劲的发展势头，成为热销的商品。 绿色商品之所以热销，是因为 A．其使用价值能够适应消费者的需求B．其凝结了较多的体力和脑力劳动 C．其具有较高的价值D．其交换的范围越来越广3．“新版人民币即将上市，先暏为快！”近日微信朋友圈中流传着这条微信，并被广泛转发，微信中附有500元等大面值的币样正反面，样币带有水印，样子逼真。针对此事，央行有关负责人曾对媒体辟谣指出，目前没有任何发行500元面值等大面额纸币的计划。近几年的物价涨幅，信用工具的发展也表明，我国暂无发行大面值纸币的必要。下列说法正确的是 A．信用卡等工具的发展杜绝了发行大面值纸币的可能 B．我国有权决定是否发行以及何时发行面值为500元的人民币纸币 C．发行面值为500元的人民币必须发生通货膨胀时 D．是否发行500元币面值纸币由流通中所需货币量决定 4．海信集团十年来投入技术研发资金15亿元，注重提高劳动生产率，自主研发出我国第一款高清晰、高画质数字视频媒体芯片，达到国际先进水平，率先打破国外垄断。这表明，商品生产者如果率先改进技术设备，提高劳动生产率，在同一时间内生产的 A．单位商品价值量增加，商品价值总量增加，交换中获利就会增大 B．单位商品价值量降低，商品价值总量不变，交换中获利就会增大 C．单位商品价值量不变，商品价值总量增加，交换中获利就会增大 D．单位商品价值量降低，商品价值总量增加，交换中获利就会增大 5．2016年12月22日起，中国人民银行陆续发行2017年贺岁普通纪念币一套。这套纪念币
一、选择题 1. 一般成人可以有意识的控制排尿，即可以“憋尿"，这说明 A. 高级中枢可以控制低级中枢 B．排尿中枢位于大脑皮层 C. 下丘脑可以产生抗利尿激素 D．渗透压感受器位于大脑皮层 答案A 解析 试题分析：在中枢神经系统中，调节人和高等动物生理活动的高级神经中枢是大脑皮层，在生命活动调节过程中,高级中枢调节起着主导的作用. 解：排尿过程受低级中枢控制，但有可以有意识的控制排尿,说明低级中枢受高级中枢控制． 故选:A。 考点：神经、体液调节在维持稳态中的作用． 2．萤火虫尾部发光器能发光的机理如下图所示。ＡTP快速荧光检测仪中含有荧光素、荧光素酶等物质,用来快速检测食品表面的微生物,下列说法正确的是 ． A． AＴP是细胞中的能量货币,细胞中储存大量ATP为生命活动供能 B。微生物残留量越多，产生的ＡTＰ越多，所发荧光强度越强 C. AＴP快速荧光检测仪只能检测残留的需氧型微生物
D．AＴP快速荧光检测仪直接检测葡萄糖溶液也可发荧光 答案B 解析 分析 ATＰ快速荧光检测仪中含有荧光素、荧光素酶等物质,用来快速检测食品表面的微生物,原理是荧光素与ATP接触形成荧光素酰腺苷酸,后者在荧光素酶的作用下被氧气氧化发光。 详解AＴP是细胞中的能量货币，但细胞中储存的AＴＰ较少，其通过快速转化为生命活动供能，A错误；根据分析可知，微生物残留量越多，产生的ＡTP越多，所发荧光强度越强，Ｂ正确；ＡTP快速荧光检测仪能检测残留的所有能产生AＴP的微生物，Ｃ错误;葡萄糖溶液中不含AＴP,所以不能用ＡTP快速荧光检测仪检测，D错误。 点睛解答本题的关键是理解ATＰ快速荧光检测仪的原理，根据图示弄清楚ＡＴＰ快速荧光检测仪中含有的是三个成分与发光的关系. 3．图是人们设想的宇宙飞船生态系统模式图，以下叙述不正确的是 Ａ．图1中B、C、Ｄ可表示航天员所需食物、氧气和水等生活资源 Ｂ。密封飞船中的能量循环利用，可以使飞船生态系统保持长期稳定 C．分解罐的分解产物Ｅ可以向藻类植物提供多种无机盐和二氧化碳 D. 该生态系统营养结构简单、自我调节能力差，需宇航员进行调控 答案Ｂ 解析
2021年高三元月双周练试题（数学） 一、填空题（本大题共14小题，每小题5分，共70分，请将答案填在答题卡相应位置） 1．已知命题p ：?x ∈R ，x 2－x ＋1＞0，则命题?p 是 ▲ ． 2．设集合A ＝{x |－1≤x ≤2}，B ＝{x |0≤x ≤4}，则A ∪B ＝ ▲ ． 3．设复数z 1＝1－2i ，z 2＝x ＋i (x ∈R )，若z 1·z 2为实数，则x ＝ ▲___． 4．一个正四面体的四个面分别涂有红、黄、蓝、白四种颜色，若随机 投掷该四面体两次，则两次底面颜色相同的概率是 ▲ ． 5．有一组样本数据8，x ，10，11，9，已知它们的平均数为10，则这 组数据的方差s 2＝ ▲ ． 6．在如图所示的流程图中，输出的结果是 ▲ ． 7．若x 21＋m ＋y 2 1－m ＝1表示双曲线，则m 的取值范围是 ▲ ． 8．已知数列{a n }的前n 项和S n ＝2n ＋n －1，则a 1＋a 3＝ ▲ ． 9．在△ABC 中，若sin(2-A)=sin(-B)，且 cosA=cos(-B)，则△ABC 的三个内角中最小角的值为_▲_. 10．已知正四棱柱的底面边长为2，高为3，则该正四棱柱的外接球的表面积为 ▲ ． 11.在平面直角坐标系x0y 中，已知平面区域则平 面区域的面积为_▲__. 12．如图，平面四边形ABCD 中，若AC ＝5，BD ＝2，则 (→AB ＋→DC )·(→AC ＋→ BD )＝ ▲ ． 13. 设二次函数的值域为，且， 则的最大值是 ▲ . 14．若函数为定义域上单调函数，且存在区间（其中），使得当时，的值域恰为，则称函数是上的正函数，区间叫做等域区间．如果函数是上的正函数，则实数的取值范围为 ▲ . 二、解答题（本大题共6小题，共90分．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) 已知△ABC 的三个内角A 、B 、C 所对的边分别为a 、b 、c ，向量m ＝(sin A ，1)， n ＝(1，－3cos A )，且m ⊥n ． （1）求角A ； （2）若b ＋c ＝3a ，求sin(B ＋π 6)的值． （第6题图）A B C D （第12题图）
a 湖北省荆州市沙市区2016-2017学年高二数学下学期第一次双周考试题 文 （无答案） 一、选择题（12=60分，请将唯一正确的答案代号填涂到答题卡的相应位置） 1．直线330x y ++=的倾斜角为（ ） A ．0° B ．－30° C ．350° D ．120° 2．某班有男生36人，女生18人，用分层抽样的方法从该班全体学生中抽取一个容量为9的样本，则抽取的女生人数为（ ） A ．6 B ．4 C ．3 D ．2 3．某篮球队甲、乙两名运动员练习罚球，每人练习10组，每组罚球40个，命中个数的茎叶图如图所示，则下列结论错误 的一个是（ ） A ．甲的极差是29 B ．甲的中位数是25 C ．乙的众数是21 D ．甲的平均数比乙的大 4．如果执行如图所示的程序框图，输入x =－12，那么其输出的结果是（ ） A ．9 B ．3 C ．3 D ． 1 9 5．下列命题中： ①命题p ：“?x ∈R ，使得2x 2﹣1＜0”，则?p 是假命题． ②“若x +y =0，则x ，y 互为相反数”的逆命题为假命题． ③命题p ：“?x ，x 2－2x +3＞0”，则?p ：“?x ，x 2－2x +3＜0”． ④命题“若?p ，则q ”的逆否命题是“若?q ，则p ”． 其中正确命题是（ ） A ．②③ B ．①② C ．①④ D ．②④ 6．设α、β是两个不同的平面，l 、m 为两条不同的直线，命题p ：若平面α∥β，l ?α，m ?β，则l ∥m ；命题q ：l ∥α，m ⊥l ，m ?β，则β⊥α，则下列命题为真命题的是（ ） A ．p 或q B ．p 且q C ．￢p 或q D ．p 且￢q 7．若直线l 1：ax +（1－a ）y －3=0与直线l 2：（a －1）x +（2a +3）y －2=0互相垂直，则a 的值是（ ） A ．﹣3 B ．1 C ．0或3 2 - D ．1或－3 8．函数f (x )=﹣x 3+3x 2+9x +a ，x ∈[﹣2，2]的最小值为－2，则f (x )的最大值为（ ）
顺义区2020届高三第二次统练 生物试卷2020.4 第一部分( 选择题共30分） 本部分共15小题，每小题2分，共30分；在每小题给出的四个选项中，选出最符合题目要求的一项。 1.下列叙述中，不能 ．．体现生物界具有统一性的是 A．生物膜都是由磷脂双分子层构成的 B．脂肪和淀粉是所有细胞的储能物质 C．核糖体是所有细胞合成蛋白质的场所 D．不同生物体所含的基本元素种类相同 2.右图为细胞中的膜结构，相关叙述正确的是 A．①所示物质中含有镁元素 B．图中结构为叶绿体的内膜 C．图中ATP的能量来自物质氧化分解 D．②和③物质的元素组成一定相同 3.关于细胞分化、衰老和凋亡的叙述，不．正确 ．． 的是 A．衰老细胞内多种酶的活性降低 B．细胞分化使细胞功能趋于专门化 C．细胞凋亡与基因选择性表达无关 D．干细胞形成神经细胞的过程属于细胞分化 4.玉米黄质是叶绿体中的一种叶黄素，其含量随光 照强度不同发生变化。当植物暴露在过强光照下 时，玉米黄质将吸收的过剩光能直接转化成热能， 以避免光合器官受到伤害。右图是植物叶片吸收 的光量与光合放氧量的关系，相关叙述正确的是 A．光量为200和600时玉米黄质含量相同 B．光量为400和600时实际光合速率相同 C．光量为400时理论和实际产生ATP的量相同 D．光量为200时C3的还原速度小于光量50时 5.某高等生物体（2n）中细胞M经分裂后形成四个细胞，下图是四个细胞的示意图，相关 叙述正确的是
A．M在分裂过程中发生了交叉互换 B．M位于生物体的卵巢中 C．M在分裂过程中发生了染色体移接 D．①②由不同细胞分裂来 6.果蝇中眼色色素的产生需要显性基因E，基因G控制紫色色素合成，基因g控制红色色 素合成，不产生色素的个体为白眼。两纯系杂交，结果如下表，下列解释正确的是 A．基因G可能位于X染色体上 B．只有基因型为eegg的个体表现白眼 C．子二代中紫眼果蝇均为雌性 D．基因E和基因G位于同源染色体上 7.新型冠状病毒具有很强的传染力，其遗传物质为“+RNA”，繁殖过程如下图。与大肠杆 菌相比下列相关叙述正确的是 A．完成遗传物质的复制均需RNA聚合酶 B．遗传物质复制过程中所需的原料相同 C．蛋白质的合成均需要宿主细胞的核糖体 D．遗传物质复制均遵循碱基互补配对原则 8.澳大利亚大火过后，当地其他植被还没有恢复时，高大乔木桉树的树干上就长出新芽， 展现出顽强的生命力。桉树的种子具有坚硬的外壳，在自然条件下不易萌发，大火煅烧后更易萌发。桉树的树叶富含油脂，极易引起森林大火，只有考拉能分解树叶产生的毒素。下列相关叙述不正确 ．．．的是 A．考拉能分解桉树的毒素是自然选择的结果 B．每次大火都可巩固当地桉树优势种的地位 C．桉树优先恢复可提高生态系统抵抗力稳定性 D．桉树产生油脂易引起大火是其生存策略之一 9.人体排尿是一种复杂的反射活动，下图示排尿反射过程。当膀胱被尿液充盈时，膀胱内 牵张感受器受到刺激产生兴奋，使人产生尿意，引起膀胱的逼尿肌收缩，排出尿液，逼 尿肌收缩又进一步刺激牵张感受器兴奋。下列叙述不正确 ．．．的是 亲本子一代子二代 红眼（♀）╳白眼（♂）紫眼（♀）、红眼（♂）3/8紫眼、3/8红眼、1/4白眼
高三英语双周练试卷（三） 第一节完形填空（共20小题；每小题1.5分，满分30分） 阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。 This is a story about a learning experience that had a big effect on the way I live my life. The 1 in the story did not give me tests on my work. I was taught by one of the most effective 2 of teaching. These words ──Where is my wallet? appeared in my 3 at once when I found my wallet was missing. I 4 my memory fast, then realized that I had left my wallet in the library’s public 5 ! Because the library was now 6 , I had to wait until the next morning. When I got there the next day, all I found was a clean restroom. This was the first time I could remember ever 7 to see a clean restroom. As I walked out, I looked at myself in the 8 and shook my head without saying. I politely 9 the librarian and asked her if a wallet had been found in the restroom. “ No.” That was that. I walked off with a sense of 0 . I wondered how happy I would be if I had 11 my wallet with sixty dollars and other 12 things. Finally, it was 13 that I accepted the fact that my wallet was gone. A week later, I received a 14 in the mail. It was my wallet! It was the most 15 that nothing was missing! But there was a letter folded up in one of the wallet pocket, I slowly unfolded the letter, which read something like this: When we continue to help people 16 , we will live in a larger and more rewarding world. This person regarded as my teacher didn’t even leave a return17 . So I couldn’t thank him. But from that day on, I 18 myself that l will follow this 19 , help others and make them as 20 as I was when I was helped! 1. A. 1eader B. writer C. scholar D. teacher 2. A. aids B. methods C. materials D. systems 3. A. mind B. hand C. pocket D. letter 4. A. developed B. improved C. searched D. recorded 5. A. office B. restroom C. reading-room D. showroom 6. A. crowded B. open C. closed D. occupied 7. A. hating B. hoping C. refusing D. preferring 8. A. street B. restroom C. corner D. mirror 9. A. interviewed B. approached C. managed D. eased 10. A. satisfaction B. forgiveness C. disappointment D. safety 11. A. found B. bought C. lost D. borrowed 12. A. reasonable B. strange C. surprising D. personal 13. A. gladly B. painfully C. willingly D. naturally 14. A. 1etter B. note C. package D. book
湖北省沙市中学高二物理上学期第一次双周测试题 考试时间：2019年9月15日 一、单选题（每小题4分，共40分） 1．保护知识产权，抵制盗版是我们每个公民的责任与义务。盗版书籍影响我们学习效率甚至 给我们的学习带来隐患，小明有一次不小心购买了盗版的物理参考书，做练习时，他发现有一个电荷所带的电荷量看不清，拿来问老师，如果你是老师，你认为下列几个关于电荷量的数字中正确的是（ ） A ．6.6×10﹣19C B ．7.2×10﹣19 C C ．8.0×10﹣19C D ．8.4×10﹣19C 2．学习物理要正确理解物理规律和公式的内涵．你认为下列理解正确的是（ ） A ．根据库仑定律公式122 q q F k r =可知，两个电荷的距离趋于零时，库仑力为无穷大 B ．根据W=qU 可知，一个电子在电势差为1V 的两点间被加速，电场力做功为1eV C ．由匀强电场电势差与电场强度的关系U Ed =可知，匀强电场中任意两点间的电势差与 这两点间的距离成正比 D ．根据电容器的电容的定义式Q C U =可知，电容器的电容与它所带电荷量成正比 3．如图所示，三个点电荷q 1、q 2、q 3固定在一直线上，q 2与q 3的距离为q 1与q 2的距离的2倍， 每个电荷所受静电力的合力均为零，由此可以判定，三个电荷的电量之比q 1：q 2：q 3 为 ( ) A ．9：4：9 B ．4：9：4 C ．(-9)：4：(-36) D ．4：9：36 4．如图所示,在水平向右、大小为 E 的匀强电场中,在O 点固定一电荷量为Q 的正电荷，A 、B 、 C 、 D 为以O 为圆心、半径为r 的同一圆周上的四点,B 、D 连线与电场线平行,A 、C 连线与电场线垂直.则( ) A ．A 点的场强大小为 B ．B 点的场强大小为 C ． D 点的场强大小不可能为0 D ．A 、C 两点的场强相同 5．如图所示，一圆环上均匀分布着负电荷，x 轴垂直于环面且过圆心O ．下列关于x 轴上的 电场强度和电势的说法中正确的是( ) A ．O 点的电场强度为零，电势最高
天津市静海区第一中学2020届高三生物3月统练试题（无答案）1．绝大部分的生物都使用A、C、G和T 4种碱基来构成遗传物质，后来有科学家培育出了包含两种人工合成碱基(X和Y)的大肠杆菌，在此基础上又培育出了一个包含天然和人工碱基的DNA的活体生命，这个新生命能合成全新的蛋白质。下列相关叙述错误的是( ) A．该活体生命必定能产生新的代谢途径及生存和繁殖方式 B．理论上6种碱基可能编码多种新的氨基酸 C．若可编码新的氨基酸，则其可成为研发新型药物和食品的基础 D．由此DNA转录出的mRNA，其上的密码子可能依然能编码20种氨基酸 2．图示为某果蝇的染色体组成，下列有关叙述正确的是( ) A．果蝇体细胞中染色体上的基因都是成对存在的 B．对果蝇基因组测序需要检测5条染色体 C．图中Ⅰ为X、Y染色体的同源区段，上面的基因所控制的性状的遗传和性别无关 D．若该果蝇的后代中出现了一只染色体组成为XYY的果蝇，是由减数第一次分裂异常导致的3．半乳糖凝集素3(Gal3)是由某种吞噬细胞合成、分泌的糖蛋白，可与胰岛素竞争结合靶细胞膜上的胰岛素受体，研究发现，某些患糖尿病的实验小鼠血浆中Gal3水平过高。下列合理的是( ) A．吞噬细胞分泌Gal3时需载体蛋白协助并消耗ATP B．Gal3与胰岛素受体结合后促进组织细胞摄取葡萄糖 C．该实验小鼠胰岛B细胞不能正常合成、分泌胰岛素 D．抑制Gal3基因表达能缓解该实验小鼠的糖尿病症状 4．油菜素甾醇(BR)是一种植物生长调节物质，BRIL是BR的细胞膜受体。在拟南芥突变体植株中BRIL 结构异常，使BR信号传导缺陷，导致细胞增殖异常，从而引起植株矮化。下列有关分析不正确的是( ) A．BRIL具有感知和传递BR信号的作用 B．BR具有促进细胞分裂和植物茎秆伸长的作用C．BRIL结构异常导致BR无法进入细胞内发挥作用 D．人工获得拟南芥突变体的主要方法有化学诱变、物理诱变和生物诱变 5．南京地处亚热带地区，四季分明，植物能更好地接受外界光照、温度等变 化的刺激。某些植物通过调节体内各种激素的合成，使自身冬天休眠、夏天 生长，调节过程如图所示。下列有关叙述正确的是( ) A．10 ℃有利于过程①②③④，30 ℃有利于过程①③⑤⑥
第1页,共4页 第2页,共4页 密 学校 班级 姓名 学号 密 封 线 内 不 得 答 题 七年级数学第一学期双周练试卷（11.1-11.6） 一、填空（每格2分，共40分） 1、如图，长方形ABCD 平移后与长方形EFGH 重合，那么线段AD 与线段________重合，平移的距离是_________的长； 2、旋转对称图形的旋转角的范围是__________，当旋转角为180°时，这个图形叫做___________图形； 3、平行四边形__________（填“是”或“不是”）中心对称图形； 4、正五边形有______条对称轴，圆的对称轴有________条； 5、如图，在平行四边形ABCD 中，AB=2.5，BC=4，点E 为平行四边形内一点，三角形DCF 是由三角形ABE 平移得到的，它的平移方向是_______，平移距离是__________的长； （第5题） （第6题） 6、如上图，△ABC 中，AB=2，BC=3，CA=4，若将△ABC 绕着A 点逆时针旋转 60°后与△AB 1C 1 重合， 那么CC 1=_______，若∠ACB=20°，那么∠B 1C 1C=_______度； 7、中心对称图形___________（填“是”或“不是” ）旋转对称图形； 8、小强站在镜子前，从镜子里看到对面墙上挂着的电子表的读数是“15：01”，则电子表的实际时刻是____________； 9、下列这些电子屏上显示的数字是中心对称图形的有_______； 1 2 3 4 5 6 7 8 9 0 10、正五边形是______对称图形，它的最小旋转角是______度； 11、成轴对称的两个图形，对应点的连线被_________垂直平分； 12、如图，平行四边形ABCD 中的对角线AC 、BD 相交于点O ，那么在图中有_____对关于O 点成中心对称的三角形； （第12题） （第13题） 13、如上图，在△ABC 中，点D 在BC 边上，△ABD 绕点A 旋转后与△ACE 重合，如果∠ECB=100°，那么旋转角的大小是_______度，∠B=_______度。 二、选择题（每题3分，共15分） 14、下列图形中，是轴对称图形但不是中心对称图形的是（ ） A 、正三角形 B 、正方形 C 、长方形 D 、菱形 15、轴对称图形必定有对称轴，它的这条对称轴（ ） A 、必是射线 B 、必是线段 C 、必是直线 D 、直线或线段都有可能 16、在以下日常生活中，不属于平移运动的是（ ） A 、物体随升降电梯上下移动 B 、操场上国旗随风飘动 C 、轻轨列车在笔直的轨道上行驶 D 、物体随自动扶梯斜向移动 17、下列图形是旋转对称图形，且有一个旋转角为120°的是（ ） A 、正三角形 B 、正方形 C 、长方形 D 、五角形 18、如图，点C 是线段AB 的中点， ①线段AB 是轴对称图形，它的对称轴是经过点C 的直线； ②线段AC 向右平移后能与CB 重合； ③线段AB 是中心对称图形，它的对称中心是点C ； ④线段BC 绕着点C 逆时针旋转90°后能与AC 重合。 其中正确的有（ ） A 、1个 B 、2个 C 、3个 D 、4个
湖北省荆州市2017-2018学年高一化学下学期第一次双周考试题 可能用到的相对原子质量： H-1 C-12 N-14 O-16 Na -23 Al-27 Fe-56 Cu-64 一、选择题(本题共16个小题，每小题3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) Co的叙述不正确的是 1、下列关于原子60 27 A.中子数为33 B.电子数为33 C.质量数为60 D.质子数为27 2、据报道，用10B合成的10B20有较好的抗癌作用。下列叙述正确的是 A. 10B20是一种新的化合物 B. 10B20的中子数和核外电子数不相等 C. 10B和10B20互为同位素 D. 10B和11B互为同位素 3、X元素原子最外层有7个电子，Y元素原子和X元素的原子次外层都有8个电子。在X与Y 形成的化合物中，阴、阳离子的电子层结构相同。则X与Y形成的化合物的化学式是 A. NaF B. MgCl2 C. NaCl D. CaCl2 4、下列试剂保存方法或实验方法中，不正确的是 A.实验室中金属钠通常保存在煤油里 B.液溴易挥发，在存放液溴的试剂瓶中应加水封 C.保存FeCl3溶液时，通常在溶液中加少量的单质铁 D.浓硝酸通常保存在棕色试剂瓶中，置于阴凉处 5、原子序数大于4的主族元素X、Y的离子X m+、Y n-电子层结构相同，则下列叙述正确的 ①原子序数X>Y ②X和Y在同一周期 ③Y与X族序数之差是8-(m+n) ④X、Y核电荷数差为(m-n) A. ①③ B.①④ C.①② D. ①②③ 6、有X、Y两种元素，原子序数≤20，X的原子半径小于Y，且X、Y原子的最外层电子数相同（选项中m、n均为正整数）。下列说法正确的是 A.若X(OH)n为强碱，则Y(OH)n也一定为强碱 B.若H n XO m为强酸，则X的氢化物溶于水一定显酸性 C.若X元素形成的单质是X2，则Y元素形成的单质一定是Y2 D.若Y的最高正价为+m，则X的最高正价一定为+m 7、在一定条件下发生如下反应：RO3-+5R-+6H+=3R2+3H2O，则下列说法正确的是 A. R位于元素周期表中的第VA族 B. R的氢化物的水溶液呈酸性
2019-2020年九年级上学期第一次双周测试英语试题 一、单项选择（共15分，每小题1分） ( ) 1. —Look at _________ sculpture, Jack! How do you like it? —This is ________ most wonderful on I have ever seen. A. the; a B. a; the C. the; the D. a; a ( ) 2. —Which would you like, a cup of coffee or a bottle of orange, Jane? —__________. I’d just like a cup of tea. A. Either B. Both C. None D. Neither ( ) 3. It’s creative _______ you _______ this good idea. A. of; to e up with B. for; to e up with C. of; think of D. for; to think of ( ) 4. —My cousin is good at all his subjects at school, but he never ________. —What a ________ boy! We should learn from him. A. gets off; thoughtful B. takes off; energetic C. shows off; modest D. puts off; curious ( )5. The railway Qinghai to Tibet is the longest plateau(高原) railway in the world. A.Connecte B.Connects C. Connecting D. is connected ( )6. I’d rather______than _______ A. read books; watch TV B. reading books; watching TV