课后练习的参考答案可以让大家知道自己做的正确了没有。下面是小编分享的全新版大学英语综合教程3课后答案，欢迎大家阅读!

　　UNIT 3

　　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 the Department of Clinical Medicine 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 January 1986---killing all seven 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 due to the fact that/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

　　II. 1) away 2)inside/in 3)forward/through 4)back

　　5)off 6)home 7) back down 8)in...out

　　III. 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) The claim is not unrealistic in view of a sharp decrease in the city's violent crimes.

　　5)His poor health is not unrelated to his unhealthy way of life.

　　Comprehensive Exercises

　　1. Cloze

　　1. 1) Statistics 2)rural 3)era 4)stood for 5)on the latch

　　6)vulnerable 7)barrier 8)electronic 9)reflection 10)civilized

　　2. 1) together 2)liable 3)shift 4)electric 5)cautious

　　6)sophisticated 7)thieves 8)break 9)chances 10)signs

　　II. Translation

　　1.1) The Internet is changing the way people live, (no matter) whether they are in urban or rural areas.

　　2)Medium-sized and small companies are more vulnerable to the threat of the global economic crisis than large ones.

　　3) With regard to our term paper, the professor asked us to analyze the unemployment chart first, and then provide critical reflections on the nations economic development.

　　4)It never occurred to him that their team would win the basketball match by a large margin.

　　5) Looking back on my twenty years' teaching in high school, I attribute my success to patience, talent, and the con

　　stant pursuit of knowledge.

　　2. 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 a barrier to criminal activity. A light should be fixed in the doorway and switched on at night. Make sure/Assure yourself that you don't leave the door on the latch if you happen to be the last to come in. If you decide to buy a sophisticated electronic alarm system, be sure to ask for its signs and put them up on both windows and doors. In addition you may have it hooked up to a police station.