河北省深州市20202021学年高二英语下学期期末考试试题含解析.docx
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1、河北省深州市长江中学2020-2021学年高二英语下学期期末考试试题(含解析)本试卷分第I卷(选择题)和第n卷(非选择题)两部分,全卷满分150分,考试时间120分钟。第I卷(选择题,共95分)一、选择题(本大题共三部分,第一部分30分,第二部分50分,第三部分15分,共95分。每小题选出答案后,请填在答题卡上。)第一部分听力(共两节,满分30分)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。1. Wh
2、ere will the woman go first?A. To a bakery. B. To a post office. C. To a library.2. What are the speakers mainly talking about?A. Low pay.B. A high rentC. Spending habits.3. How many championship has the speaker* s robot team gotten?A. Two.B. FoulC. Six.4. Who is the man?A The woman s sonThe womanJ
3、s brother.B. The woman5 s nephew.5. What is the man most probably?C. A teacher.A. A cook.B. A waiter.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。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67题。6. What is the man, s plan for the future?A. To de
4、sign his own computer.B. To open a computer company.C. To work as a computer programmer.Researchers have been able to make DNA since the 1970s. The traditional approach takes ONA nucleotides(核甘酸)and adds them, one by one, to a growing chain called an olig。(寡核甘酸)。 But the process is typically slow an
5、d error-prone, limiting oligos to cibout 200 letters-a tiny part of the thousands of letters that make up most genes.Over the decades, most researchers have settled on one particular polymerase(聚合酶),calledTdT,because unlike others, it can attach new nucleotides to an oligo strand without following a
6、 DNA template strand. Scientists have tried for years to make TdT add one nucleotide at a time and stop, before repeating the process with a different nucleotide. But TdT doesnt work wel1 with these modified nucleotides. TdT is very picky. says Sebastian Pal luk, a Ph. I), student. One such system,
7、for example, required about an hour to add each modified base, far too slow to be practical.Ultimately, the approach should be cheap, because TdT is easy to manufacture in bacteria. It, s also fast. Most new nucleotides attach to the growing oligo in 10 to 20 seconds. For now, the step still takes a
8、 minute. So synthesizing a whole gene will still likely take the better part of a day.The new approach is not quite ready. So far, the group has made oligos only 10 bases long. And there are still a few writing problems, as the approach was only 98% accurate at writing DNA, below the 99% accuracy of
9、 the traditional approach. In order to write oligos up to 1000 baseslong, the approach will likely need to be 99. 9% accurate.12. What is the drawback of theA. It is too expensive.B. It is too hard to be carriedC. It increases oligos to aboutD. It is too slow and there maytraditional way of making D
10、NA?out.200 letters.be mistakes.13. Why have most researchers settled on TdT?A.Because it is cheap.B. Because it is easy to get.C. Because it is harmless to people.D.Because it is easy to control.14. What can we learn from the text?A. Researchers have been able to make DNA recently.B. The new approac
11、h is qui te ready wi thout any problem.C. There isstillsomeworktodobeforethenewapproachispractical.D. To writeoligos1000baseslong,theapproachneeds tobe99%accurate.15. Where is this text most likely from?A.A magazine.B.A diary.C.A novel.D.A guidebook.【答案】12. D 13. B 14. C 15. A【解析】【分析】本文为一篇说明文。文章主要讲述
12、了科学家们正在尝试用一个最新的方法来改写基因,如果成功, 将可以在一天的时间里创造出一个新的基因,但FI前该技术尚未成熟。【12题详解】细节理解题。由第二段最后一句话But the process is typically s 1 ow and error-prone, limiting oligos to about 200 letters-a tiny part of the thousands of letters that make up most genes.(但这个过程通常是缓慢而且容易出错的,限制寡核仔酸只有大约200个字母一一这只是组成大多数基因 的数千个字母中的一小部分。)”
13、可知传统重组基因方法的缺点是缓慢且容易出错,故选I)。【13题详解】细节理解题。根据第二段的第一句话“Over the decades, most researchers have settled on one particular polymerase(聚合酶),called TdT, because unlike others, it can attach new nucleotides to an oligo strand without following a DNA template strand.(在过去的几十年里,大多数研究人员 都专注于一种特殊的聚合酹,称为TdT,因为与其他酹
14、不同的是,它可以将新的核甘酸附着到寡聚链上,而 不需要附着在 DNA 模板链上。)”第三段第一句话Ultimately, the approach should be cheap, because TdT is easy to manufacture in bacteria.(最终,这种方法应该是廉价的,因为TdT很容易在细菌中制 造。)”可知研究人员专注于TdT的原因是因为TdT在细菌中很容易得到。故选Bo【14题详解】推理判断题。由文章最后i段的首句“The new approach is not quite ready.(新方法还不完全成熟。)” 及最后一句 In order to wr
15、ite oligos up to 1000 bases long, the approach will likely need to be 99. 9% accurate.(为了写出1000个碱基长的寡核甘酸,这种方法可能需要99. 9%的准确度。)”可以推断 出这种基因重组的方法目前还不成熟,主要是精准度不够,由此可以推断出这种方法离正真应用到实际还 需要进行很多的试验与研究工作。故选Co【15题详解】推理判断题。根据文章的主要内容可知本文为一篇科技说明文,讲述了科学家们正在尝试用一个最新的方 法来改写基因,如果成功,将可以在一天的时间里创造出一个新的基因,由此可知本文最有可能出现在与 科技
16、相关的杂志上。故选Ao第二节(共5小题:每小题2. 5分,满分12. 5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。Daily Habits of Naturally Productive PeopleWhen it comes to being more efficient at your job. you know the basics. But research shows a whole new side of productivity you may not have realized. 16Focus on being happier.17
17、 Even if a low mood does not completely disable you from functioning, it can decrease your productivity to make you far less efficient. Also, dont hesitate to seek help. This will not only help you achieve a more stable work-life balance, but a new outlook can also open you up to new opportunities a
18、nd necessary changes.Prioritize fitness.You know the countless benefits of exercise. 18 Even 30- minute bursts of moderate-to-high physical activity just three to four times a day can go a long way in helping you accomplish your personal and professional goals. If you re really not a fan of the gym,
19、 join a group class to keep yourself motivated.19Pressing pause is important. Studies show that prolonged tasks that require high levels of focus, energy, and attention can cause you to become less productive and focused over time. Take brief mental breaks. When we take ? health breaks we are much m
20、ore focused and engaged for our next work, in contrast, when we try to work continual 1y on a project wi thout breaks our quali ty of work tends to deteriorate.Don, t try to do everything at once.People believe the more we can do at once, the better. 20 In fact, the more we multitask, the less effic
21、ient and productive we become. Instead, to increase productivity, focus on one task at a time until its completed and then give all of your attention to the next task. A. Take breaks at times.B. Make productivity first.C. However, research shows the opposite.D. Studies found happier people are more
22、productive.E. Have a look at these habits of natural 1y productive people.F It improves your mood and increase your brains productivity.G. Researches show that daylight exposure improves your levels of activity.【答案】16. E 17. D 18. F 19. A 20. C【解析】【分析】本文为说明文。当你在工作中更有效率的时候,你知道基本原理。但研究表明,你可能还没有意识 到生产率
23、的全新一面。文章主要介绍了做事高效的人的几个日常习惯。【16题详解】根据上文 “When i t comes to being more efficient at your job. you know the basics. But research shows a whole new side of productivity you may not have realized.(当你在工作中更有效率的时候, 你知道基本原理。但研究表明,你可能还没有意识到生产率的全新一面)”结合后文主要说明了几个有助于 高效的好习惯,可知E选项“看看这些天生高效的人所具有的习惯”符合语境,起到了总起下文的作用
24、。 故选E。【17题详解】根据小标题“Focus on being happier.(专注于变得更快乐)”以及后文“Even if a low mood does not completely disab 1e you from functioning, it can decrease your productivity to make you far less efficient. Also, don* t hesitate to seek help. This will not only help you achieve a more stable work-life balance, b
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