（第二版）新标准大学英语综合教程Boo2Unit 4课后答案

Unit 4

Active Reading (1) 4

1 a 2b 3c 4c 5d 5

1 submerged 2 destiny 3 glared 4 wits 5 gazed 6 habitual 6

1 exclaimed 2 intricate 3 propositions 4 vicinity 5 hustle 6 sensible 7

1 turn up 2 come around/ will come around 3 call time on 4 pulled out 5 for show 8

1 This is probably part of the description of Bob issued by the Chicago police. It is a distinctive feature that can be used to identify him.

2 As diamonds are very expensive, having many of them suggests that the man is wealthy and has done well in life.

3 This indicates that the man is in fact not Jimmy. He is unlikely to have grown by two or three inches, as he was already 20 when they last met.

4 The man was submerged in his overcoat because he was trying to hide his face from Bob, and he wasn’t really Jimmy. The bad weather provided a good excuse, however. 5 Bob was feeling emotional. His old friend Jimmy had tricked him, and he was probably angry and shocked.

Active Reading (2) 3

1 c 2 d 3a 4b 5c 4

1. precaution 2. fraud 3. trash 4. cancel 5. deceived 6. Household 5

1. log off

2. commonplace 3. forge

4. anonymous 5. fictional 6

b, b, a, a, a, a, a

Language in use 1

1. I make a lot of mistakes

2. I waste a lot of time chatting to people about nothing 3. I always start it too late

4. I spend too much time on the phone instead of talking to them 5. I am useless in class the next day 6. I spend far too much money 2 b

3 b, a, b, b, b, a

4 b, b, a, b, a, b, b, a, b, b

5．近年来涌现了许多重大技术发明，其中包括互联网、个人电脑系统及掌上设备。互联网

技术不断发展，给我们的日常生活带来了诸多便利。然而，虽然高科技的发展带来了种种好处，它也带来了有待解决的新问题。其中一个问题就是网络犯罪。网络犯罪已成为普通民众及专家日益关注的问题。专家们提出了各种方法来预防针对个人、家庭、企业及政府机关的网络犯罪。在预防针对个人的网络犯罪方面，我们必须尽量减少在网上发布个人信息以自我保护。我们应避免向陌生的在线机构和个人提供个人信息。要格外提防那些要求在电脑上进行安装的网站或邮箱附件，这一点也十分重要。

6.In the middle and late 20th century, the rapid development of science and technology witnessed the birth of high technology, represented by the Internet. But at the same time various high-tech crimes, as represented by cybercrime, also arose, constituting a potential threat to the healthy development of society. How to prevent and reduce high-tech crimes has become a common concern. China is facing a similar situation. To avoid or reduce losses caused by high-tech crimes, we should keep alert in our daily lives, so as not to be deceived.

Reading across cultures

1.

1. It is simple.

2. People are obtaining music for free, so the companies are not receiving revenue from sales. 3. They think it is a way of spreading their music and getting it better known. People will then be willing to buy it.

4. It may protect their sales, but it has also upset a lot of consumers, and this may in turn make them unpopular with the public. 5. They see no problem with it.

6. In some ways probably; in others probably not. It is unclear what the effect is overall. 7. There are so many people taking part in file-sharing.

Guided writing 2. For: 1, 3, 5

Against: 2, 4, 6

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