大学英语综合教程4课后习题

5.many trees in this area have been cut down(砍倒) to make room for buildings which as wrosened our living environment

这个地方的很多树已经被砍倒留出地方给大楼，使我们的生活环境变糟糕

6.in order to avoid possible infection by the unknow viruses researchers are protected from head(从头到脚) to foot with caps face masks and white gowns

为了避免被不知道的病毒的可能感染，研究员们被从头到脚的用帽子、面罩和白袍保护

7.despite the warm weather the explorers searched out(找到) some snow on the northen slope and boiled it for drinking water 尽管天气暖和，这些探险家们在北坡上找到一些雪和煮沸它得到饮用水

8.starting bare-handed you have built up so many steel plants,this is nothing short of(白手起家) miraculous

开始于白手起家，你建立那么多钢铁场。这简直是个奇迹 9.As yet(至今) we haven't felt the need for any extea hands,but it's only a matter of time

到目前为止我们没有感觉到需要任何别人的帮助，但是它仅仅是时间问题

10.while one cannot choose one's birthplace,one can certainly decide based on what one has experienced the best place to settle in(迁入) 然而一个人不能选择自己的出生地，但是人可以很确切的决定基于个人有怎么样的经验，迁入最好的地方

11.parents who spend time and moeny teaching their children music can take heart(树立信心) from a new canadian study which shows young children who take music lessons have better memories than their nonmusical peers

父母花费更多的时间和金钱教他们的孩子音乐，能够树立信心，来自加拿大的新的研究，显示小孩学了音乐课的比同龄的没有学音乐的记忆力更好 Unit 2

1.studies show that if a working environment is pleasant productivity(生产率) increase.

研究表明，如果工作环境舒适，生产率的提高。

2.Private space travel is a relatively new phenomenon(现象). It?s difficult at the moment to assess its effects.

私人太空旅行是一个相对新的现象，一下子很难评价它的作用。 3.All of us need to build up relationships with others unless we choose to live in complete isolation(隔离) from the outside world. 我们都需要建立与他人的关系， 除非我们选择住在离外面的世界完全隔离。

4.Since sending her child to the kindergarten, she has been delighted to see a gradual(逐渐) change in boy?s character; he seems less self-centered now.

送孩子到幼儿园以来，她一直高兴地看到一个男孩的性格逐渐改变，他似乎少了以自我为中心。

5.As an active environmentalist, Davis has earned a reputation as an outspoken opponent(反对者) of any kind of nuclear waste dumping at sea.

戴维斯作为一个积极的环保主义者，他反对向大海倾任何形式的原子能废物，并以这样的反对者的身份而赢得声誉

6.Quills(羽毛笔) were the chief writing tool from the 6th century until the advent(问世) of steel pens in the mid 19th century. 从公元 6 世纪以来羽毛笔是主要书写工具，直到在 19 世纪中叶问世的钢笔。

7.Do you think it will ever be possible to alter human genetic(基因) code in order to produce the perfect human being. 你认为将来有可能改变人类的基因去产生完美的人类? 8.In the end her sheer competence and professionalism won universal(普遍) respect within and out of the government.

最后她的能力和专业精神赢得了政府内部和外部的普遍的尊重。

9. His political views are rather extreme(极端); I hate to discuss anything with him.

他的政治观点比较极端，我不想与他讨论任何事情。 10. The cheap perfume you see on special offer in petrol stations often smells nasty(恶臭) after a couple of hours.

廉价的香水味，就像你在加油站呆了两个小时后发出的恶臭味。 11. the consumer boom(热潮) of the 1980s led to an explosion of shopping centre development in big cities around the country. 20世纪80 年代的消费热潮引起大城市周围购物中心的疯狂发展。

12. You shouldn’t use “Yours faithfully”—it?s too formal(正式) for this kind of personal letter.

你不应该使用“此致”，因为它对于这种个人信件来说太正式。 13. according to a survey(调查) among 1000 residents，garbage collection service in the city is far from satisfactory.

据调查，1000名居民中，垃圾回收服务的城市还远远不能令人满意。

14. the cost of food and clothing has come down in recent years similarly(同样地) .fuel prices have fallen quite considerably. 近年来食物和衣服的成本在下降。同样燃油价格也相应的下降。