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大学英语六级听力 017

时间:2010-11-29 03:17来源:互联网 提供网友:WWWSEER   字体: [ ]
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Controling Cancer

There are two main causes of cancer: heredity and environment. We can do nothing to change our heredity, that is, the basic physical characteristics that are passed on to us by our parents. However, we can do a great deal to control our environment, which may account for eighty to ninety percent of all cancers. Enviromnental pollution can be divided into two kinds: personal and nonpersonal. Personal pollution may be defined1 roughly2 as unhealthy habits such as smoking, drinking, and eating the wrong foods. Clearly, with enough will power we can control this personal environment. nonpersonal pollution, on the other hand, refers to those things which are beyond our individual control. One example would be industrial pollution, which is very hard to control because of the expense involved. It would be expensive in terms of profits and, perhaps, jobs.The American automobile3 industry, for example, resisted the law requiring smog-control devices4 because it feared the added expense would reduce profits. Nevertheless, some laws protecting the environment have been quite successful in reducing pollution.


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1 defined GuQzxW     
adj 定义的; 清晰的
参考例句:
  • These categories are not well defined. 这些类别划分得不太明确。
  • The powers of a judge are defined by law. 法官的权限是由法律规定的。
2 roughly nXrxK     
adv.概略地,粗糙地,粗鲁地
参考例句:
  • If you treat your coat so roughly,it will be worn out soon.你如果这么糟蹋你的外套,它很快就不能穿了。
  • The island is roughly circular in shape.这个岛屿大致是圆形的。
3 automobile rP1yv     
n.汽车,机动车
参考例句:
  • He is repairing the brake lever of an automobile.他正在修理汽车的刹车杆。
  • The automobile slowed down to go around the curves in the road.汽车在路上转弯时放慢了速度。
4 devices e0212e54ec3a2a120ca0d321b3a60c78     
n.设备;装置( device的名词复数 );花招;(为实现某种目的的)计划;手段
参考例句:
  • electrical labour-saving devices around the home 节省劳力的各种家用电器
  • modern labour-saving devices such as washing machines and dishwashers 诸如洗衣机和洗碗机之类的现代化省力设备
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TAG标签:   大学英语  六级听力
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