Controlling 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 were passed on to us by our parents. However, we can do a great deal to control our environment, which may account for 80-90 %of all cancers.
Environmental pollution can be divided into two kinds: personal and impersonal. Personal pollution may be defined roughly as unhealthy habits such as smoking, drinking, and eating the wrong foods. Clearly, with enough will power we can control this personal environment.
Impersonal 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 automobile industry, for example, resisted the law requiring smog-control devices because it feared the added expense would reduce profits. Nevertheless, some laws protecting the environment have been quite successful in reducing pollution.
2017届高考英语一轮模块训练:模块6 Unit 1 Laughter is good for you(译林版)
2017届高考英语一轮模块训练:模块6 Unit 4 Helping people around the world(译林版)
2017届高考英语一轮配套学以致用训练:6-4 《Global warming》
2017届高考英语一轮配套学以致用训练:3-3 《The Million Pound Bank Note》
2017届高考英语一轮配套学以致用训练:3-4 《Astronomy:the science of the stars》
2017届高考英语一轮配套学以致用训练:8-3 《Inventors and inventions》
2017届高考英语一轮模块训练:模块6 Unit 2 What is happiness to you(译林版)
2017届高考英语一轮配套学以致用训练:7-3 《Under the sea》
2017届高考英语一轮阅读与完形(4)(北师大版)
2017届高考英语一轮配套学以致用训练:5-4 《Making the news》
2017届高考英语一轮配套学以致用训练:6-2 《Poems》
2017届高考英语一轮配套学以致用训练:3-1《Festivals around the world》
2017届高考英语一轮配套学以致用训练:2-4 《Wildlife protection》
2017届高考英语一轮配套学以致用训练:8-5 《Meeting your ancestors》
2017届高考英语一轮配套学以致用训练:5-2 《The United Kingdom》
2017届高考英语一轮模块训练:模块5 Unit 3 Science and nature(译林版)
2017届高考英语一轮配套学以致用训练:1-1 《Friendship》
2017届高考英语一轮配套学以致用训练:3-2 《Healthy eating》
2017届高考英语一轮模块训练:模块5 Unit 2 The environment(译林版)
2017届高考英语一轮配套学以致用训练:7-1 《Living well》
2017届高考英语一轮配套学以致用训练:4-2 《 Working the land》
2017届高考英语一轮配套学以致用训练:6-3 《A healthy life》
2017届高考英语一轮配套学以致用训练:1-5 《Nelson Mandela — a modern hero》
2017届高考英语一轮配套学以致用训练:7-5 《Travelling abroad》
2017届高考英语一轮配套学以致用训练:8-1 《A land of diversity》
2017届高考英语一轮配套学以致用训练:2-5 《Music》
2017届高考英语一轮阅读与完形(5)(北师大版)
2017届高考英语一轮配套学以致用训练:1-4 《Earthquakes》
2017届高考英语一轮配套学以致用训练:7-4 《Sharing》
2017届高考英语一轮配套学以致用训练:4-5 《Theme parks》
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