北师大版（2019）必修第二册Unit 4 Information technology Lesson 2 Apps 同步课时作业（含答案）

Unit 4 Lesson 2 Apps
一、
1.To perform CPR, you first have to take off his shirt and g________ his chest (胸); then, blow air through the mouth into his lungs.
2.They're doing you a big f________ by allowing you to stay.
3.I need to have a second test to c_____ the diagnosis.
4.To many people, technology means computers, hand-held d_____, or vehicles that can travel to distant planets.
5.But Steve p_____ on, playing for the first time in his life for a stranger.
二、选词填空
help out ; prepare for ; according to ; find out ; set up
1.They ________ a working party to look into the issue.
2.I ________ with the secretarial work.
3.Make sure you have enough time to ________ the new lessons.
4.________ a new survey, 34.4 percent of people around the world will work from home in 2021.
5.You can ________ whether they are prepared to share the cost of the flowers with you.
三、
One day a man found a cocoon (茧) of a butterfly in the forest. He sat there for several hours and watched the butterfly. Suddenly a small opening appeared, and the butterfly struggled to force its body through that little hole. Then it seemed to stop making any progress. It appeared as if it had gotten as far as it could go no further. So the man decided to help the butterfly.
He took a pair of scissors and cut off the remaining bit of the cocoon so that the butterfly could come out easily. Much to his surprise, the butterfly got a swollen body but very small, weak wings when it came out of the cocoon.
The man continued to watch the butterfly because he expected that the body would grow smaller at any moment and the wings would enlarge and be able to support the body. But neither happened! In fact, the butterfly spent the rest of its life crawling around with a swollen body and small wings. It was never able to fly.
The man was in his kindness, but he did not understand the nature rules. The struggle required for the butterfly to get through the tiny opening was God's way of forcing fluid (流体)from the body of the butterfly into its wings so that it would be ready for flight once it achieved its freedom from the cocoon.
Sometimes struggles are exactly what we need in our life. If God allowed us to go through our life without any difficulties, it would make us fail. We would not be as strong as we could have been. And we could never fly.
1. In the first paragraph the butterfly was _____.
A. flying in the forest
B. playing with the man
C. making a cocoon for itself
D. trying to get out of the cocoon
2. What would have happened to the butterfly without the man's help
A. The butterfly would come out easily.
B. The butterfly could crawl on its wings.
C. The butterfly would have got to prepared to fly.
D. The butterfly would never gain its freedom.
3. What can we learn from the story
A. Warm-hearted people are always around us.
B. Struggles are necessary in our life sometimes.
C. Helping others could make oneself happy.
D. Where there is a will, there is a way.
4. What is the best title for the story
A. The struggle for freedom
B. A kind man
C. The joy of helping a butterfly
D. A lucky butterfly
四、
Tim Berners-Lee. If you don't know his name very well, you've surely used his famous ①_____ (invent). The British scientist ②_____(create) the world Wide Web in the 1980s. On Oct 29, the Internet ③_____ (official) turned 50 years old. To mark the day, Berners-Lee wrote online The Internet the web it enabled have changed billions of lives for ④_____ better. But their power for good is under threat.
⑤_____ (speak) at the University of California, Los Angeles (UCLA), he pointed out three problems affecting today's web—criminal behavior, ad-filled websites, and offensive online communication, ⑥_____ led Berners-Lee to create the Web Foundation and a contract for the web. Both aim ⑦_____ (protect) Internet users. In the contract, he mentioned the need for companies to make sure that everyone has web access called for a reduction in offensive material, and more ⑧_____ (person) data privacy. The latter is a hot topic right now. Big companies, like Facebook, have ⑨_____ (use) users' private information by sharing it with advertisers.
In the next 30 years, if we give up on trying to build a better web, we will have failed it. We need to come together ⑩_____ a global community(社区).
答案以及解析
一、
1.答案：press
2.答案：favour
3.答案：confirm
4.答案：devices
5.答案：pressed
二、
答案：1.set up
2.help out
3.prepare for
4.According to
5.find out
三、
答案：1-4 DCBA
解析：1.细节理解题。根据第一段中的"the butterfly struggled to force its body through that little hole"可知,蝴蝶正在努力地破苗。故选D。
2.细节理解题。根据第四段中的"the butterfly to get through the tiny opening was God's way of forcing fluid (流体) from the body of the butterfly into its wings so that it would be ready for flight once it achieved its freedom from the cocoon"可知,蝴蝶破茧是长出翅膀的必经之路,如果没有男人的帮助蝴蝶会通过小孔破茧长出翅膀,会飞向天空,但男人帮助它之后破坏了它的生长规律,它的翅膀没有发育完整,不能飞翔了。故选C。
3.推理判断题。根据最后一段中"Sometimes struggles are exactly what we need in our life"可知,斗争在我们生活中是必要的。故选B。
4.主旨大意题。由文章最后两段可知本文主要讲述了为自由做斗争的意义。故选A。
四、
答案：①invention ②created ③officially ④the ⑤Speaking ⑥which ⑦to protect ⑧personal ⑨misused ⑩as
解析：①考查名词。形容词famous后接名词形式。故填 invention。
②考查时态。根据句中时间状语"in the 1980s"可知,用一般过去时。
③考查副词。修饰动词turned,用副词形式。故填 officially。
④考查冠词。固定短语for the better,意为“好转;向好的方向发展”。故填the。
⑤考查非谓语动词。句中逻辑主语he与speak之间为主动关系,所以用现在分词作状语。
⑥考查定语从句。非限制性定语从句中,先行词为three problems,指物,用关系代词which。
⑦考查非谓语动词。短语aim to do sth旨在做某事,所以用不定式作宾语。故填to protect。
⑧考查形容词。修饰名词data privacy,前用形容词形式。故填 personal。
⑨考查时态。句意:脸书等大公司滥用用户的个人信息, 将这些信息与广告商进行分享。根据句意可知,这里用动词 misuse,表示“滥用”,且本句为现在完成时。故填misused。
shift考查介词。句意:作为一个全球社区,我们必须要团结起来。 此处用介词as,表示“作为”。故填as。
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