大学英语三Unit3课本答案

（book3）Unit Three Security – Land of the Lock

Words & Expressions

on the latch: (of a door) closed but not locked

- Let yourself in; the door is on the latch.

- Don’t forget to leave the front door on the latch if you go to bed before I come back.

vulnerable: adj. exposed to danger or attack; unprotected

- Compared with Saudi Arabian soccer team, the Chinese team is more vulnerable.

- 你的论点相当容易受到批评。criticism.)

- How does the country defend vulnerable groups in society?

statistics: n. collection of information expressed in numbers

- roughly every 22 years a major drought occurs in the United States.

- 统计数字显示退休之后女性比男性生活愉快。 women live happier lives than men after retirement.)

era: n. a period of history or a long period of time

- 我们现在正处于一个新的伟大的信息时代。(We are now in a great new era of information.)

hook up to: connect or attach (sth.) to (sth. else) with or as if with a hook

- My computer is hooked up to the Internet, so I can communicate with my students at home via email. - The alarm systems in the banks are hooked up to the local police station.

build in/into: make (sth.) as part of the structure

- The cupboards in the kitchen are all built in.

- We are having those shelves built into the wall over the bed.

pry:

1. vt. force sth. open or away from a surface

- 你能不能帮我不打破这个木箱盖而撬开它?

(=Can you help me pry the cover off this wooden box without breaking it?)

2. vi. look or inquire closely and curiously

- Don’t pry into the affairs of others.

Collocation:

pry about 到处窥探 pry into 窥探，打听

feature:

1. vt. give a prominent part to (sb./sth.)

- 报纸为那个事件做了个专题报道。 (The newspaper featured the story of the event.)

- The play featured two well-known actors. …..由两位明星主演。

2. n. a prominent or distinctive aspect, quality, or characteristic

- The building contained many new features of construction.

Collocation:

a unique feature 独一无二的特征 a key feature 主要特征

a notable feature 显著特征 make a feature of 以…为特色；注重

barrier: n. thing that prevents progress or movement

警察设了路障。(The police put a barrier across the road.)

Collocation:

trade barrier

language barrier 贸易壁垒 cultural barrier 文化隔膜 语言障碍 geographical barrier地理阻隔

chances are that… ( see P67 Notes 3)

It occurs /occurred to sb. that (to do sth.)…. “某人突然想起” (para.9&11)

It doesn’t/didn’t occur to sb that某人没有想到…..

hold/keep (sb.) at bay: prevent (an enemy, pursuers, etc.) from coming near

- Eating oranges keeps colds at bay. 常吃桔子可以远离感冒。

- She left the light on at night to keep her fears at bay.

stand for: represent; mean

- The symbol “%” stands for percent.

- 约翰一直支持正确的事情。(John always stands for what is right.)

be bathed in—cover or envelop as if with liquid

e.g. 日出时，田野和树林都沐浴在金色的阳光下。The fields and woods were bathed in a golden light at sunrise.

She bathed her feet in warm water to relieve the pain.

civilize: vt. cause to improve from a primitive stage of human society to a more developed one

- The terrorist attack on the World Trade Center has shocked the civilized world.

- 非洲国家希望把非洲所有的原始部落都变成文明社会。

(The African countries hoped to civilize all the primitive tribes on the land.)

reflection: n.

1) a thing bringing discredit or criticism

这有损你的名誉。(This is a reflection on your honor.)

2) reflecting (careful thinking) or being reflected

- On further reflection, she saw her mistake.

- 他沉思片刻后，做出了否定的回答。(After a minute’s reflection, he gave a negative answer.)

Collocation:

cast/throw reflections on 指责（某人） on/upon reflection经再三思考

without reflection 轻率，不经思考

look back on: think about (sth.) in one’s past

- I always look back on those days as the happiest time of my life.

- 当你回顾你的一生时，你最珍惜的是什么时候？ (When you look back on your life, what moments would you cherish the most? )

Key to the Exs.

P72-75 Vocabulary

I 1. 1）threatens 2) by a small margin 3) civilize 4）closed up 5) wandered 6) paste 7) without so

much as 8) sideways 9) hook up to 10) universal 11) chart 12) Bathed in

2. 1）narrowed down 2) looked back on 3) cut off 4) fit into 5) wear(the other)down 6) lies in

7) put up 8) stand for

3. 1) …which is likely to make people vulnerable to asthma has been found by researchers at ….in Oxford.

2)…with mirrored doors had to be built in so as to make their small bedroom look larger.

3)…feature the space shuttle Challenger blowing up in Jan. 1986—killing all 7 crew.

4)… threatened to keep the pupils in after school they were quieted at once.

5)…are a major barrier to the country’s economic growth because imported oil has absorbed 40% of its

foreign exchange .

4. 1) looked back on; atmosphere; urban life 2) era; hooked up to the; the electronic

3）the suburb; a sophisticated; system; analyze; make errors

P76 age：Double negation

1. Internet is not such an unusual word as it used to be. ….

2. …. Most men do not look unattractive in them. …..

3. Wealthy as she is, she is not unconcerned by her sudden unemployment…..

4. …This claim is not unrealistic in view of a sharp decrease in the city’s violent crimes.

5. …His poor health is not unrelated to hie unhealthy way of life.

P77 Comprehensive Exs。

1. Text-related 1）Statistics 2) rual 3) era 4) stood for 5) on the latch 6) vulnerable 7) barriers

8) electronic 9) reflection 10) civilized

P78-79 Translation

1. Sentence translation

1） larger ones.

3) With regard to’s economic devepment.

’ teaching in high school, I attributed my success to patience, talent, and

the constant pursuit of knowledge.

2. Passage translation

It is almost impossible to keep a determined burglar out. All you can do is discourage him for a few minutes, thus exposing him to police patrols. Common sense tells us that lighting is criminal activities. A light should be fixed in the doorway and switched on at night. Make sure that you don’

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