Unit23 Grammar—Emphatic Structures:Inversion and “It” Cleft Sentences & Perfectverb forms课时练习(含答案)
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1、GrammarEmphatic Structures: Inversion and “It” Cleft Sentences & Perfect verb forms 基础巩固 .单句语法填空 1By the time you get back,I will have cleaned(clean) the windows. 2Im tired out.I have been shopping(shop) all afternoon and I dont seem to have finished anything. 3I was just going to cut my rose bushes
2、 but someone had done(do) it.Was it you? 4Your mother seemed to have known(know) the whole truth,for she was so angry. 5Young though/as he is,he knows how to deal with such a complex situation. 6No sooner had he arrived at the office than he set about doing some research. 7So quickly did he speak th
3、at most of us could hardly follow him. 8The actor was told that his fans had been waiting(wait) there for two hours. 9Having found(find) a hotel,we looked for somewhere to have dinner. 10It was on the farm that he met the wise person for the first time. .单句改错(每小题仅有 1 处错误) 11Hardly had she finished h
4、er report than when she walked to the park. 12It was on my birthday when that my brother bought me an interesting book. 13On the back wall hangs hang two old valuable paintings. 14It is said that the old man has planted more than 1,000 trees up to now. 15We will have prepared the dinner when you get
5、 home tomorrow. .完成句子 16It was on a lonely island that he was saved after the boat went down. 船沉没后,他是在那个孤岛上得救的。 17Not until all the fish died in the river did the villagers realize how serious the pollution was. 直到河里的鱼都死光了,村民们才意识到污染有多么严重。 18Having answered all the emails,the girl switched off the co
6、mputer. 在回复完所有的邮件后,女孩把电脑关闭了。 19Im sorry to have kept you waiting for such a long time,but I was really busy just now. 很抱歉让你等了那么久,但是我刚才确实很忙。 20You must be tired,for you have been studying all day long. 你一定累了,因为你一整天都在学习。 21Having been told many times,the naughty boy made the same mistake. 虽然被告知了好多遍,但这
7、个淘气的男孩还是犯了同样的错误。 22When they arrived at the station,they found that the train had left. 他们到达车站时,发现火车已经离开了。 23I will have finished reading all these books by the end of next month. 到下个月月底,我将会读完所有这些书。 24Sitting in the middle of the room was an old professor with white hair. 坐在房间中间的是一位白发苍苍的老教授。 25Only
8、when he left his home did he realize how he loved his family. 直到他离开家时才意识到他是多么爱他的家人。 能力提升 .阅读理解 When asked how technology might improve the lives of people with vision impairments(视力 障碍), Joann Becker presented a misleadingly simple challenge.“Well, ” the vision impairments tech specialist recalls sa
9、ying.“Id like to be able to find my bus stop through Be My Eyes.” Be My Eyes,which went live in 2015,establishes a direct video connection between visually impaired users and sighted volunteers.The assumption is simple: Many people who are blind dont need any actual assistance in completing their da
10、ily tasks,but merely need a little help. A sighted volunteer might be asked to help identify which of two cans contains tomatoes.In this case,the visually impaired user can cook a meal just fine on his/her ownall he/she needs is a quick confirmation that he/she has the correct can.The model appears
11、to be working;more than 540,000 volunteers and nearly 40,000 people with low vision are registered on the app. “An elderly woman can now help a visually impaired technician set up his computer, ” says founder Hans Wiberg,who has very low vision.“She doesnt need to know a thing about computers.She on
12、ly needs to read what is presented on the screen.Then he can do the rest.” Early assistive technology centered on dedicated devices(专用设备),because of the niche market(缝隙市场),which sold for hundreds or even thousands of dollars.But the smartphone, multipurpose and near-universal,has completely changed
13、the economy of scale. “There are larger market forces driving high-powered computation,high-quality engineering and high-quality battery management in the smartphone market than those in a specialty product,” says Aaron Steinfeld,a research professor at the Robotics Institute at Carnegie Mellon Univ
14、ersity. “The reality is,most sighted people dont know somebody who is blind.” Becker says.“They think the solutions that a blind person needs are far more expansive and expensive than,it turns out,they need to be.I think these apps are enabling sighted people to see that blind people just need some
15、simple clues to help them do any number of things in their lives.” 语篇解读 本文介绍了一款新型 app:Be My Eyes。它在 2015 年上线,在视觉受损的用户和 视力正常的志愿者之间建立了直接的视频连接,旨在为视力受损的用户提供帮助。 26What is the first paragraph used for in the text? AShowing the main idea. BIntroducing the topic. CGiving one example. DMaking a conclusion. 答
16、案 B 解析 写作目的题。通读全文可知,本文主要介绍了 Be My Eyes 这款应用的面世、功能以及 市场前景等。因此第一段是为了引出文章话题。故选 B。 27How does the app Be My Eyes work? ABy creating a video link between the disabled and sighted one. BBy recognizing which of two cans has tomatoes and cooking. CBy establishing a high-quality engineering and computation.
17、DBy flashing the everyday tasks of the technician and volunteers. 答案 A 解析 细节理解题。根据第二段第一句“Be My Eyes,which went live in 2015,establishes a direct video connection between visually impaired users and sighted volunteers.”可知,Be My Eyes 通过在视觉受损的用户和视力正常的志愿者之间建立直接的视频连接来为有视力障碍 的人提供帮助。故选 A。 28What can we kno
18、w from the fifth and sixth paragraphs? ASmartphone market has great economic potential. BThe smartphone becomes a special app. CFine devices have changed the economy. DCost matters when it comes to assistive technology. 答案 A 解析 推理判断题。第五、六段提到因为缝隙市场价格昂贵,早期的视力辅助技术主要集中 于专用设备,但用途广泛又几乎通用的智能手机完全改变了经济规模。同时还
19、介绍了智能手 机其他比专用设备高级的地方。由此可知,智能手机市场具有巨大的经济潜力。故选 A。 29From the text we can know . Aonly people with low vision are registered to use the app Bsimple assistance can help the blind free from some troubles Cvolunteers should be very familiar with high-tech computers DJoann Becker thinks it hard to find a b
20、us stop using Be My Eyes 答案 B 解析 推理判断题。根据最后一段最后一句“I think these apps are enabling sighted people to see that blind people just need some simple clues to help them do any number of things in their lives.”可知,简单的协助可以帮助盲人摆脱一些麻烦。故选 B。 .完形填空 Yesterday, our teacher asked us when a man could be referred to
21、as an old man.David stood up and said people with wrinkles could be called old people.However,Mary didnt 30 ,for some people may gain wrinkles at an earlier age owing to their 31 life.Then Lily expressed her idea that those reaching their 60s or more could be called old people.However, Emily express
22、ed her 32 and said some old people may still be energetic and trying to pursue their dreams, which makes them appear 33 .The class was over and we still didnt reach any 34 ,so the teacher asked us to think about it after class. The 35 has reminded me of the saying of JBarrymore that a man isnt old a
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