1、北京市海淀区2021届高三英语上学期期中练习试题本试卷共10页，100分。考试时长90分钟。考生务必将答案答在答题纸上，在试卷上作答无效。考试结束后，将本试卷和答题纸一并交回。第一部分：知识运用（共两节，25分）第一节 完形填空（共10小题；每小题1分，共10分）阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题纸上将该项涂黑。Lesson PlanIt was just an ordinary day. There was the usual 1 as the children greeted each other. I looked over my pl
2、an book and I never felt better. It would be a good day and we would 2 a lot. After we settled in for our reading class, I started to check their workbooks.When I came to Troy, he had his head down as he showed his unfinished 3 in front of me. He tried to pull himself back out of my sight as he sat
3、on my right-hand side. 4,I looked at the incomplete work and said, “Troy, this is not finished.He looked up at me with the most pleading eyes I have seen in a child and said,“I couldnt do it last night because my mother is dying. The sobs that followed 5 the entire class. How 6 I was that he was sit
4、ting next to me. I took him in my arms and his head rested against my chest. His sobs echoed through the room and tears flowed. The children sat with tear-filled eyes in dead silence. Only Troys sobs broke the stillness of that morning class. One child 7 for the tissue box while I just pressed his l
5、ittle body closer to my heart.What do I do for a child who is losing his mother? Choking back my tears,I said to the group,Lets pray for the recovery of his mother. And everyone did so.After some time,Troy looked up at me and said,I think I will be okay now.He had exhausted his supply of tears; he r
6、eleased the 8 in his heart. Later that afternoon, Troys mother died.When I went to the funeral(葬礼），Troy rushed to greet me. He fell into my arms and just rested there awhile. He seemed to gain strength and courage, and then he led me to the coffin. There he was able to look into the face of his moth
7、er,to face 9 even though he might never be able to understand the mystery of it.That night I went to bed feeling lucky for the good sense lo 10 my reading plan and to hold the broken heart of a child in my own heart.1. A. EmbarrassmentB. excitementC. astonishmentD. disappointment2. A. accomplishB. d
8、emandC. missD. recall3. A. experimentB. assignmentC. documentD. argument4. A. GraduallyB. HopefullyC. AccidentallyD. Naturally5. A. frightenedB. annoyedC. shockedD. impressed6. A. gladB. surprisedC. proudD. curious7. A. wishedB. racedC. preparedD. waited8. A. desireB. powerC. burdenD. guilt9. A. dif
9、ficultyB. failureC. deathD. sorrow10. A. carry outB. carry onC. set upD. set aside第二节 语法填空（共10小题；每小题1.5分，共15分）阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。ABulletproof coffee 11)_(invent) in 2011 by Dave Asprey, an American businessman.He came up with the idea after visiting Tibet i
10、n 2004. Asprey noticed that people there were drinking their teas with yak butter. 12 _Asprey tried a cup, he felt really good. So when he got back home,Asprey tried making his own recipe by adding grass-fed butter and coconut oil to his coffee. He discovered that it gave him energy and even helped
11、him lose weight. Plus, it tasted pretty good.So,he decided to share his recipe 13_ the world.BDouban is a Chinese social networking platform whose users are mostly young people. Recently, a Douban discussion group 14_(name) “985 Loser Introduction Plan became popular, causing a heated discussion. Mo
12、st of the group members are students or graduates from top universities in China, but they consider 15_(they) as losers for various reasons. By writing down their own life stories, they share their 16_（suffer) and aim to improve their situations by learning from each other s experiences.CKeeping a t
13、ravel journal is one of the best 17_(way) to keep the memory of a trip alive. Going back and reading your own words 18_(describe) a day in a foreign country makes you realize how easy it is to forget little details. For people who are not used to writing on a daily basis, keeping a travel journal do
14、esnt have to be hard. It 19_(require) only a small effort. I usually spare 15 to 20 minutes at night before going to sleep,20_forces me to be concise(简洁的） and efficient.第二部分：阅读理解（共两节，40分）第一节（共15小题；每小题2分，共30分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题纸上将该项涂黑。AAt age 12,Keegan Sobilo of New Baltimore caref
15、ully tucks his legs and arms into a fire suit, pulls on a helmet and climbs into a race car that exceeds 80 mph. He has been doing this since age 8.“ At first, I was scared to death. I was like, Lets do bowling or swimming. Its still very scary.But he knows what hes doing. Your heart goes out on tha
16、t track every time he goes out there, said his mother Hillary Sobilo.The sixth-grader always wears pajamas to the track every night and takes them off when he puts his race clothes on. Hes been doing that for the last four years. Thats his trademark,” said Tim Phillips, his crew chief. The first tim
17、e he wore his train pajamas to the track,Keegan went from last place to ninth place.He decided they brought luck. Since then, he has won a series of championships.Passion for cars runs in the family. Keegans father is a design mechanic at Fiat Chrysler Automobiles. He knows what it means to have sea
18、ts and roll cages built to fit his sons body.What I see in Keegan is passion, like how I feel about car restoration. But for him, everything has to align itself. I tell my son you have to be the perfect package. Winning races every weekend is not the only key. More importantly, you have to have the
19、right name, you have to look the correct way, speak the correct way, and act the correct way. Then the rest of it is really luck, like the stock market. If you dont put yourself out there,youll never hit it big.While Keegans classmates play basketball and volleyball,Keegan is at the Birch Run track-
20、practicing, qualifying and racing until 10 p.m. or 2 a.m. While many children spend time playing video games, Keegan runs race simulation training with his joystick after school.The kid is cool.It was like having a grandson. We showed respect to each other. And he takes it very seriously, said compe
21、titor Mike Todd,69,of Galesburg,Michigan.Hes an older soul in a young mans body. Id like to see him make it big. Hes got the willpower.21. Keegan enjoys _A. swimmingB. racing carsC. bowlingD. playing games22. According to the passage., what does Keegans father value most?A. Victory.B. Safety.C. Good
22、 qualities.D. Real luck.23.It can be learned from the passage thatA. Keegan spends a lot of time practicingB. the train pajamas bring Keegan successC.Keegans mother worries about his studiesD. Keegan picked up the hobby at the age of 4BYoure never too young to make an impact on your community.Member
23、s of Gen Z are exceptionally creative,cause-oriented,and hyper-aware of the world around them,making them perfectly ready to help handle the worlds problems through volunteering.If you want to make a difference in your community, be a part of something bigger than yourself, or just need to earn some
24、 required volunteer hours, then this is the place to start. Here are a few organizations of Gen Z with volunteer opportunities for teens!Habitat for HumanityEveryone deserves to have a place they call home. By volunteering with Habitat for Humanity, you can play a role in building up your community.
25、 Their Habitat Youth Programs accept volunteers between the ages of 5 and 40 for everything from home construction to affordable housing advocacy.Meals on WheelsFor those teens who just got their licenses and love any reason to get behind the wheel, heres a volunteer opportunity that ll make driving
26、 worthwhile. Meals on Wheels is on a mission to meet the nutritional and social needs of seniors. 225 million meals have been delivered so far-connect with your local provider to find out how you can get involved.Key ClubAs the oldest service program for high schoolers, the Key Club has quite a hist
27、ory of helping teens get involved in volunteering. Because clubs are student-led, you get a direct say in the kinds of service projects you want to do.Chances are, theres already a chapter in your school, but if not, you can try taking the lead in one.Best BuddiesVolunteer with Best Buddies to help
28、end the social,physical,and economic isolation of 200 million people with intellectual and developmental disabilities-and youll make some new pals in the process! Join a school chapter (or start your own) to use friendship as a tool for inclusivity in your community.And dont worry. Even if you cant
29、volunteer physically, there are also tons of online volunteer Opportunities available! Find out more about joining a worthwhile volunteer organizations at www.Gen Z.org.24. If you want to help people with disabilities, yon can joinA. Habitat for HumanityB. Meals on WheelsC. Key ClubD. Best Buddies25
30、. Teens with a driving license can volunteer toA. send meals to the elderlyB. make nutritional mealsC. drive the seniors aroundD. teach the seniors to drive26. What,does the underlined word “chapter mean in the passage?A. A part of a book.B. A branch of a club.C. A period of life.D. An office on cam
31、pus.27. The author writes this passage to.A. get more people to volunteerB. teach teens to he more creativeC. promote awareness of world affairsD. instruct teens to earn volunteer hoursCWe are fortunate to live in a city that encourages bicycling as a means of transportation.Our local government has
32、 promoted bicycling by improving bike lanes and increasing the number of them. The growing number of cyclists, however, brings this question to mind: should bicyclists be required to share the responsibilities of the road? Automobile drivers have to take competency tests, follow established regulati
33、ons, and accept punishment for breaking rules. The city requests drivers to register and license their vehicles to ensure accountability (责任）。 Bicyclists who use public roadways should be held accountable, too.Lets look at what sharing the road means. For one thing, it should involve cost sharing.Au
34、toregistration and license fees are used, in part, for building and maintaining roadways. It seems only reasonable to ask bicyclists to contribute to transportation funding as well.More importantly,sharing the road includes accountability. When drivers ignore the rules of the road, the police and ot
35、her motorists have the opportunity to identify them by their license plate number and report their offenses (违法行为）。 This isnt true for bicyclists. Ive seen bicyclists moving quickly between lanes.Because they show no identification, they feel protected by anonymity(匿名）。What good would it do to repor
36、t to the police “I saw a guy on a red bike blow through the stoplight? The simple act of making bicyclists identifiable would encourage safer, more responsible riding.Of course,Ive heard arguments against asking cyclists to register and license their bikes. Some people might say, “Little kids ride b
37、ikes. Would you require a six-year-old rider to take a test and pay a fee? Obviously, the city could determine an age when cycling would be considered a means of transportation on public roads. Other people argue that bicycle fees are unfair because bikes dont damage the roadways as cars do. Bicycle
38、 registration fees could be comparatively modest, and the method for displaying a license number could be simple.Many U.S. cities and towns now implement bike registration and licensing. A statute(法规）from one. California town states that the laws regulating bicycles have a dual purpose, antitheft an
39、d safety. Im eager to see more bicyclists on the road, and Im hoping for riders who take their responsibilitiesseriously.28. To advocate responsible cycling, the author suggestsA. increasing the number of bike lanesB. giving competency tests to all cyclistsC. identifying cyclists through registratio
40、nD. reporting cycling offenses more frequently29. What is the authors purpose in writing Paragraph 4?A. To explain how bicycle registration and licensing work.B. To provide solutions to reduce irresponsible cycling of kids.C. To respond to peoples doubts about holding cyclists accountable.D. To argu
41、e against requiring cyclists to register and license their bicycles.30. What argumentative methods are used in this article? Using examples Quoting professionals Comparing and contrasting Appealing to readers emotionsA. B. C. D.31. Which of the following would be the best title for the passage?A. Sh
42、ould we encourage more cycling in the city?B. Should cyclists register and license their bikes?C. What does sharing the road mean to cyclists?D. How can road safety be guaranteed for cyclists?DAlzheimers AIAn estimated 5.7 million people in the U.S. have Alzheimers disease-the most common type of de
43、mentia(痴呆）and that number is expected to more than double by 2050. Early diagnosis is crucial for patients to benefit from the few therapies available. But no scans can deliver a conclusive diagnosis while a person is alive; instead doctors have to conduct numerous and complicated clinical and neuro
44、psychological tests.So there is growing interest in developing artificial intelligence to identify Alzheimers based on brain imaging.Researchers at the University of California,San Francisco, have now successfully trained an AI algorithm(算法） to recognize one of the early signs of Alzheimers-a reduct
45、ion in the brains glucose（葡萄糖）consumption-in positron emission tomography (PET) imaging.The algorithm accurately predicted an eventual Alzheimers diagnosis in nearly all the test cases, according to the study. In PET imaging, a very small amount of a radioactive compound are injected into the body,p
46、roducing three-dimensional images of metabolism(新陈代谢）。circulation and other cellular activities. PET is well suited for an AI diagnostic tool because Alzheimers leads to subtle changes in the brains metabolism that begin years before neural(神经的） tissue starts to go downhill, says study co-author Jae
47、 Ho Sohn,a radiologist at UCSF. These changes are very hard for radiologists to pick up,he notes.The algorithm was trained and tested on 2,100 PET brain images from about 1,000 people 55 years and older. The images came from a 12-year study that tracked people who would ultimately be diagnosed with
48、Alzheimers, as well as those with mild memory declines and healthy control participants. The algorithm was trained on 90 percent of the data and tested on the remaining 10 percent. It was then retested on a second, independent data set from 40 patients monitored for 10 years. The algorithm was highl
49、y sensitive and was able to recognize 81 percent of the patients in the first test group and 100 percent in the second who would be diagnosed with Alzheimers six years later, on average. The findings were published in February in Radiology.The algorithm is based on deep learning ,a machine-learning
50、technique that uses artificial neural networks programmed to learn from examples. This is one of the first promising,preliminary(初步的） applications of deep learning to the diagnosis of Alzheimers, says Christian Salvatore, a physicist at Italys National Research Council, who was not involved in the s
51、tudy. “The model performs very well when identifying patients with mild or late diagnoses, he says, “but catching it in the earliest stages remains one of the most critical open issues in this field.32.People are increasingly interested in using AI to identify Alzheimers becauseA. the number of peop
52、le suffering from dementia is more than doublingB. diagnostic methods that are both reliable and convenient are in needC. there are only a limited number of effective therapies for the patientsD. diagnosing Alzheimers disease through AI is still an unexplored area33. What can we learn about PET imag
53、ing?A. It recognizes the worsening of the neural tissue.B. It reduces the glucose consumption in the brain.C. It changes the pattern of the brains metabolism.D. It photographs various kinds of cellular activities.34. According to Paragraph 4,.A. 90% of the people in the study were trained on the alg
54、orithmB. the participants in the study consist of people both young and oldC. 81% of the people in the first test group were diagnosed with AlzheimersD. the algorithm managed to recognize all the patients in the second test group35. What can be inferred from Paragraph 5?A. The algorithm serves as a
55、promising treatment of Alzheimers.B. Deep learning has been widely applied in diagnosing Alzheimers.C. To detect Alzheimers in its earliest stages calls for more exploration.D. Whether to use the model to detect Alzheimers remains a critical issue.第二节（共5小题；每小题2分，共10分）根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选
56、项中有两项为多余选项。Is Managing Kids Screen Time a Good Idea?Screen time is a big topic of conversation in todays households, particularly during the pandemic when online education hours have multiplied for many students.36They hope to spare their kids from the countless challenges that technology can bring.
57、Yet the challenges of screen time overuse seldom come from kids devices themselves, but rather from the tense relationships that technology can bring to families.37But technology has positive benefits too. Since every child and family is different,managing screen time calls for joint family decision
58、-making.If parents believe they can manage a childs screen time through adolescence, they are not only fooling themselves but also inviting relationship trouble with their teens. It is a myth to think that parents can or should manage their kids screen time through authoritarian restrictions,even du
59、ring elementary school. 38 When children are left out of those decisions,they often become lesscommunicative with parents and siblings. This is the opposite of what parents want to achieve.39 From early ages, children are quite capable of understanding that a good life involves awareness and balance
60、. Just as they learn right from wrong,and good from bad, they can also learn to use technology in healthy ways. Learning how to regulate oneself and develop healthy behaviors is one of the primary tasks of childhood and adolescence. What happens when an adult tries to regulate a child is that the ch
61、ild misses out on the opportunity to learn for themselves. Enforced restrictions can also make children feel helpless and less confident.To be clear, this article is not suggesting that families never use apps or trackers, or that there should be no restrictions on screen time.40Parents should give
62、voice to children and involve them in the planning and decision-making process.A. Of course, there are websites that are unhealthy for kids to access.B. The alternative is to involve children in decisions that govern screen time.C. However,every family needs a family media plan between family member
63、s.D. The goal is to see, hear, feel,and understand how children view screen time.E. To manage childrens screen time, parents have invested in apps and trackers.F. To get children involved, parents should trust and develop kids self-awareness.G. What it is suggesting is that parents look at managing
64、screen time in a different way.第三部分：书面表达（共两节，35分）第一节 阅读表达（共5小题；共15分）阅读短文，按照题日要求用英语回答问题。I started drawing houses at six. Unlike most girls, my dream was to build a backyard clubhouse- a dream that was unrealistic given that we lived in an apartment. By high school I continued drawing and my dreams br
65、oadened-to become an architect. My older brother told me that look a university education. But my family couldnt afford that kind of elucidation. Still. I fanned the flame of hope.I got a part-time job at Bayside Bowl and started saving money. My bank account, however,was growing quite slowly. When
66、I looked at college catalogs, I couldnt imagine how I would ever get there.I decided Io shrink (缩小） my dreams lo a more realistic size.Soon after that, a newcomer started frequenting Bayside Bowl. She arrived alone. and always carried a pink bag with a ball inside. Her dark, wrinkled skin and curly
67、gray hair made her stand out among our younger customers. She talked to me whenever I cleaned near her lane. I learned her name was Bessie. She had been a singer for as long as she could remember. In her 20s she had tried to get a job as a restaurant singer. “I was a young black woman, and in the ea
68、rly 1950s doors didnt exactly open wide for me. Zilch!” she said.I admired her ability to pick up a split, hut I also appreciated her advice. Lifes like bowling. she would say. Set your eyes on your target and follow through. Indeed,Bessie hadnt let the zilches stop her. She had saved up and enrolle
69、d in the Brightwood Music Academy. It turned out this lady with the pink bowling bag was the Bessie Richards, a recording artist of the 1960s.Bessie moved on to live with her sister,hut before leaving, she left me with a S50 tip for helping her at the lanes, a reminder to ignore the “zilches” in my
70、life, and some lines of poetry she had copied from a book. Bessie said,Read this when the going seems tough. Itll help you follow through and reach for your goal. These are the lines:Hold fast to dreamsFor if dreams die Life is a broken-winged birdThat cannot fly.Hold fast lo dreamsFor when dreams g
71、oLife is a barren fieldFrozen with snow.A year has passed since I last bowled with Bessie, and Ive resumed my drawing. Im working and saving money, taking drafting classes,and applying for internships(实习）Whenever Im discouraged,1 reread those lines of poetry.There ll be no barren field of frozen sno
72、w nor zilches for me. Inspired by Bessie and the poem,I plan to continue to dream.41. What was the authors dream when she was in high school?(2分）42. Why did the author shrink her dream to a realistic size?(2分）43. How do you understand the underlined sentence Life is like bowling”？（3分）44. Describe on
73、e of Bessie s characteristics and explain why.(3分）45. Who is the Bessie in your life? How does he or she help you to pursue your dream?(5分）第二节（20分）假设你是红星中学高三学生李华。为了减少舌尖上的浪费，你校英语俱乐部拟举办有关“爱惜食物，从我做起”的英语演讲活动。请你写一篇演讲稿，内容包括：1. 食物浪费的现象及危害；2. 你爱惜食物的做法；3.你的倡议。注意：1.词数不少于80;2.开头和结尾已给出，不计入总词数。Good morning,every
74、one.Thats all. Thank you for listening.（请务必将作文写在答题纸指定区域内）海淀区2020-2021学年第一学期期中练习参考答案高三英语2020. 11第一部分 知识运用第一节 完形填空1. B 2. A 3. B 4. D 5. C 6. A 7. B 8. C 9. C 10. D第二节 语法填空11. was invented 12. When/As/After 13. with 14. named 15. themselves16. suffering(s) 17. ways 18. describing 19. requires 20. whic
75、h第二部分 阅读理解第一节21. B 22. C 23. A 24. D 25. A 26. B 27. A28. C 29. C 30. D 31. B 32. B 33. D 34. D 35. C第二节36. E 37. A 38. B 39. F 40. G第三部分 书面表达第一节41. To become an architect. / Becoming an architect.42. Because her family/she couldnt afford a university education.43. Just like playing bowling, we need
76、 to set our eyes on the target in life and follow through.44. She is/was inspiring because she encouraged the author to pursue her dream.She is/was determined /brave /persistent because she strove for her goal.She is/was generous because she left the author a tip of $50 for helping her at the lanes.
77、45. Possible version 1:My mom is the “Bessie” in my life. When I was 9, I started playing the piano, but as I didnt make much progress, I considered quitting. It was my mom who encouraged me to continue and thanks to her, now I can play very well and I enjoy playing it. Possible version 2:My mom is
78、the “Bessie” in my life. Much like Bessie, she encourages me to face challenges even though my dream seems far out of reach, and she always supports me with her wisdom and love. Without her, I would never be the committed, resilient and confident person I am today.第二节One possible version:Hello, ever
79、yone. Its my great honor to be here and give a speech on saving food.Speaking of food, there are two ugly truths. First, a huge amount of food is wasted every year. Millions of tons of cooked and served food ends up in trash cans. Second, primary and secondary school students are among the top three
80、 food wasters.At present, China is still heavily dependent on the import of certain grains, and wasting food will make our efforts to be self-sufficient in vain. Moreover, wasting food also means wasting resources like water, land and energy. Therefore, it will damage the environment in the long run
81、.Realizing the severe consequences of wasting food, Ive been doing my bit to save food. At the school cafeteria, I ask for half-size servings when Im not hungry. When dining out in restaurants with family or friends, I propose ordering smaller portions and taking the leftovers home. At home, I check the fridge before making shopping plans to avoid buying more food than we actually need. Saving food benefits every one of us. Lets clean our plates today so that we can have enough for tomorrow.Thats all. Thank you for listening.