Unit1 Science and Scientists Learning about Language课后练习（含答案）2022年人教版（2019）选择性必修第二册

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1、 Unit1 Science and Scientists Period II Learning about Language 课后练课后练 Part I基础部分 一、单词拼写 1. Matter exists in three states: _(固体), liquid and gas. 2. Recent research provided _ (坚实的) proof that Mr Brown was to blame for the severe accident. 3. Moth, meanwhile, after an _ (最初的) struggle, found his sym

2、ptoms were strangely reduced by their daily tiring journey. 4. It is not yet clear whether their disease is directly linked to the _ (病毒) or pre-existing conditions. 5. This flexible _ (框架) allows any object to be transformed into another type. 6. According to the statistics, most people consume far

3、 more _ (蛋白质) than they actually need. 7. You can lose yourself in a sea of similar hairstyles and t_ (思维) styles. 8. The basic unit of the human body is the _ (细胞). 9. When the sun is low, the grand building casts its _ (影子) on the ground. 10. The police cant charge the suspect for lack of _ (具体的）e

4、vidence. 二、单句语法填空 1. Nowadays the priority for travelling _(shift) from shopping to food and scenery. 2. Now that the plan has been made, lets get down to _ (carry) it out. 3. This book focuses on _ (theory) learning, while I need a practical guide. 4. A good advertisement should not arouse _ (resis

5、t) among the public. 5. _ (initial), I disagreed with his proposal, but later I changed my mind. 6. Two people were _ (severe) injured in the bomb attack in central London. 7. _ (confuse) about the varieties of organic food, I seemed at sea which to choose. 8. Peter, as well as his _(assist), Lily,

6、was performing a chemical experiment yesterday afternoon, but I dont know whether they have finished it. 9. According to official _ (statistic), the disease killed a great many people. 10. The priceless treasures _ (cast) into the Nile during the war. 三、选词空题 be combined with; be suspected of; be lin

7、ked to; make sense; rather than; be ready to (do); as well as; care about ; carry out; calm down 1. The guard _ killing the girl by the police. 2. Britain _ the rest of Europe by the Channel Tunnel. 3. It is known to us that theory must _ practice. 4. Planning so far ahead doesnt _ so many things wi

8、ll have changed by next year. 5. Its time for us to _ the previous plan. 6. Everything is packed, and we _ leave. 7. When you get upset, you can take a few deep breaths to _. 8. In my opinion, you shouldnt _ your appearance too much. 9. The teacher _ his students is going to plant trees tomorrow. 10

9、. Its better to express your anger, _ bottle it up. Part II 提高部分 一、阅读理解 In the distant past, our ancestors relied on stars to guide them on a clear night. Today, we have navigational(导航的) systems to help us find our way, the latest of which is the Beidou Navigation Satellite System (BDS). The BDS is

10、 entirely built by Chinese engineers. With the launch of the last satellite from the Xichang Satellite Launch Center on June 23, the global network of 59 satellites has been completed. On July 31, Beidou started providing services covering our whole planet. Its difficult to imagine the great influen

11、ce those satellites have on our daily lives. When you unlock one of Hellobikes bicycles, you are using the BDS. “The intelligent lock on each bike receives Beidou satellite signals and sends positioning information to the data center which will help collect big data on the bikes and predict users ri

12、ding needs in advance according to the data,” Chu Yiqun, a manager of Hellobike mentioned. Users can also find shared bikes more accurately(精确地) thanks to Beidous global positioning accuracy of 2.34 meters. Beidou adopts a unique two-way communication system, including its ability to receive message

13、s sent by people from areas with poor communication signals. Obviously this function isnt designed for users to chat online. Instead, it plays a role when disasters occur and communications are blocked. After the Wenchuan Earthquake in 2008, all ground-based communication facilities were interrupted

14、. Though the first generation of Beidou could only send 120 characters in a single message at that time, communication between affected areas and rescue(救援) centers was successful. Now, Beidous messaging ability has been increased to 1, 200 Chinese characters in a single message. It is widely used i

15、n disaster alarms, automatic identification and information release. As Sun Jiadong, former chief designer of the BDS said: “The application(应用) of Beidou is only limited by imagination.” 1.What can we learn about the BDS from the passage? A.It was developed by Chinese and American engineers. B.It w

16、orks better on clear nights. C.Its last satellite was launched on July 31. D.Its able to provide global coverage for navigation. 2.Why does the author mention Hellobike in Paragraph 3? A.To stress the excellent positioning ability of the BDS. B.To show how the BDS makes peoples daily lives easier. C

17、.To present the advantages and disadvantages of the BDS. D.To explain how the BDS works. 3.What is Beidous two-way communication system designed for? A.To help people when communication signals are poor. B.To make users daily communication more fun. C.To allow users to chat online more freely. D.To

18、collect data from users for the data center. 4.What does the underlined sentence in the last paragraph mean? A.Beidou may be more helpful than we know. B.Beidou inspires users imagination. C.Beidou needs to be further improved. D.Beidou is limited in application. 二、七选五 One of my earliest memories wa

19、s watching my mom talk on our old phone. I was fascinated that she could talk to someone who wasnt actually in the room with her. _1_ I was wondering how she managed to talk with someone she couldnt see. That was a long time ago. Later, we had mobile phones that could be carried around the room. _2_

20、 These days I can send an e-mail around the world in a second. My daughters smart phone has a hundred apps and a dozen social media accounts. She stores all of her information in a mysterious place known as the cloud disk, where she can take it out at any time. It seems that we are more connected in

21、 this world than ever before. _3_ Few spend time talking face to face. Instead of looking into the eyes of our loved ones, we store their photos at our screens. It seems that the most connected generations are also the loneliest. Dont let technology take our time and ruin our life. Make the time to

22、communicate with each other. Take a walk on the beach with a friend. Have a long conversation with the phones off and the hearts on. _4_ Remember that we are here to love each other, help each other and make this world a better place. _5_ But when it cant, turn it off. A.Connect offline as well as o

23、nline. B.Then came computers and smart phones. C.Smart phones have both advantages and disadvantages. D.We should communicate with each other with phones off. E.When your communication equipment can help to do these things, then use it. F.However, what bothers me is that we rarely associate with eac

24、h other nowadays. G.When she left the room, I slowly walked over to the phone and stared at it for a while. 三、完形填空 Technology is amazing and it is like a river. The 1 of a river is to get from a high place, generally a mountain, to a low place, like the sea. If something 2 the river from getting to

25、where it wants to go then it will pause for a bit, pool its resources and, if 3 way is open for it, choose that path. Eventually, it will reach its final 4 . In my years of using computers and technology I have found them to be 5 . I may want to do something on a computer. 6 , I could find my way bl

26、ocked. So I 7 for a little bit, pool my resources, and if I use a search engine, a way can present itself for me to 8 my final goal. These days it seems to be even easier to do this. If I wanted to communicate with someone there used to be 9 two ways to contact them: the telephone and snail mail. No

27、w, 10 the Internet and smart phones, I can count off the top of my head at least five ways I can contact a person and talk to them. The same 11 for sending files. A little while ago, a contact wanted me to send her a file. That file was on my computer and I was out on the road. I wanted to send her

28、that file but I had no 12 to my computer. Or did I? I connected my phone to my computer 13 and downloaded the file to my phone. Then I 14 that file to the chat program I was using and sent it to her that way. I was the river and I found my way around an obstacle with 15 . As Bruce Lee famously said,

29、 Be water, my friend. That day, I was a river of water. 1.A. choice B. goal C. limit D. benefit 2.A. protects B. frees C. blocks D. follows 3.A. any B. the other C. other D. another 4.A. stage B. level C. standard D. destination 5.A. similar B. interesting C. important D. special 6.A. Besides B. How

30、ever C. Instead D. Otherwise 7.A. pause B. stay C. continue D. prepare 8.A. change B. rebuild C. achieve D. discover 9.A. over B. only C. even D. almost 10.A. for B. by C. on D. with 11.A. goes B. makes C. works D. happens 12.A. key B. access C. entrance D. solution 13.A. angrily B. luckily C. remot

31、ely D. regularly 14.A. applied B. attached C. replied D. returned 15.A. file B. water C. friend D. technology 四、语法填空 Ever wondered how many calories are in the human body? Or ever wondered why old people have _1_(big) ears than they used to? The winners of Ig Nobel Prizes(搞笑诺贝尔奖) have got the answer

32、s. The Ig Nobel Prizes, _2_ (found) in 1991, are to honour achievements _3_ first make people laugh, and then make them think. The ceremony _4_ (take) place at Harvard University every year. Winners acceptance _5_ (speech) are limited to 60 seconds, _6_ (strict) monitored by an eight-year-old girl.

33、The honoured research might seem ridiculous _7_ first sight, but that doesnt mean it lacks scientific value. For example, the research in 2006 on why dry spaghetti tends to break into more than two pieces when it is bent was important for controlling fractures, which could have applications in every

34、thing from the design of highways and bridges _8_ the engineering of nanotubes. And a follow-up paper _9_ (publish) by MIT physicists several years later. But people are more likely to read about the broken spaghetti than to read an academic paper. Even when there is no immediate usefulness, _10_ is

35、 still good to encourage people to observe and think. 五、读后续写 阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成一篇完整的短文。 When Jayce Crowder was in kindergarten, he began noticing that he looked different from his classmates. They had two hands. But he had only one. It started when one boy teased him. Jayce was in a bad m

36、ood. Hed return home in Des Moines, Iowa, with questions: Why am I different? Why me? Why? He actually told us that he was mad at looking so different from others, said his mother, Cortney Lewis. That really hurt him. Lewis admitted she didnt know what to do at that point. How could she provide answ

37、ers to her sons questions when she had never found those answers herself? A few weeks later, Lewis came home from her job and turned on the TV to a news story about Trashaun Willis, an eighth grader from Washington middle school, Iowa. The boy, then 14, had become an Internetstar after posting video

38、s of his slam dunk(扣篮) , and, like Jayce, he was missing most of his left arm. Lewis called Jayce in. He was shocked, staring at one dunk after another. At the time, it seemed that watching Trashaun would simply be an inspiring moment for Jaycehed see a shining role model with a seemingly similar bo

39、rn disability. And had it stayed just that, Lewis would have been happy. But little did she know that a family friend had already reached out to the Des Moines Register, asking the newspaper to help set up a meeting with Trashaun to encourage Jayce and build his confidence. 注意: 1.续写词数应为 150左右; 2.请按如

40、下格式在答题卡的相应位置作答。 Paragraph 1: A few days later, the good news that Trashaun accepted the invitation to meet Jayce came. _ Paragraph 2: After the meeting, Jayce learned to accept his disability. _ 参考答案参考答案 Part I 一、1. solid 2.solid 3.initial 4.virus 5.framework 6.protein 7.thinking 8.cell 9.shadow 10.

41、concrete 二、1.is shifted 2.carrying 3.theoretical 4.resistance 5.Initially 6.severely 7.Confused 8.assistant 9.statistics 10.were cast 三、1.was suspected of 2.is linked to 3. be combined with 4.make sense 5.carry out 6. are ready to 7.calm down 8.care about 9.as well as 10.rather than Part II 一、1-4. D

42、BAA 二、1-5.GBFAE 三、1-5. BCDDA 6-10. BACBD 11-15. ABCBD 四、1. bigger 2.founded 3. that/ which 4. takes 5.speeches 6. Strictly 7. at 8. to 9.was published 10. it 五、答案： Paragraph 1: A few days later, the good news that Trashaun accepted the invitation to meet Jayce came. Finally, the boys met at Washingt

43、on Middle School on a Saturday afternoon a couple of months later and they instantly bonded. The day was not spent on self-pity. Instead, they rode bikes around the schools hallways, took photos, and played basketball together. Trashaun taught Jayce how to slam dunks, even giving him a basketball as

44、 a gift. He told Jayce he was perfect the way he looked. He encouraged him not to let anyone drag him down and shake his confidence. Paragraph 2: After the meeting, Jayce learned to accept his disability. He began to understand that there are many people like him and came to adapt himself to his dis

45、ability. He recently started practising shooting basketball every day and he really loves it. Jayce often chats with Trashaun on the Internet about basketball skills as well as some school issues. He is really motivated by this role model and has a positive attitude to his future life. As for Trashaun, he never dreamed that his videos would have such an impact. His relationship with Jayce made him look forward to helping more kids.