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.
gre写作argument开头的写法
GRE写作模板:开头、论据、论证、结尾样样好
GRE作文模板:Argument句型经典模板
GRE满分作文分析+GRE写作重点
GRE issue写作范文:研究历史的好处
GRE issue写作范文:避免偏激
GRE issue写作范文:个人主义和社会更大利益
GRE Argument写作让步式攻击体系
GRE写作模板:把握好五点内容
GRE写作高分所具备能力:模仿+逻辑思路+修辞学
GRE作文分类题库:文化类
提升GRE写作黄金经典句型
GRE写作高分必备:模仿条件及能力
GRE复习资料:经典写作50句(1)
GRE issue写作范文:直接和间接经验
GRE Issue写作题目:社会政治
GRE高分作文核心句型
从GRE满分作文解析GRE写作重点
GRE作文提纲作用及使用方法介绍
GRE Issue作文题目:国家政治
GRE写作高分必备:逻辑思路能力
GRE issue写作范文:丑闻
GRE Issue作文题目:教育政策
GRE issue写作范文:艺术价值
避免四大误区 GRE作文issue高分突破
攻克GRE作文三大要素:观点+逻辑结构+语言
GRE Issue作文题目:个人发展
安婷婷:GRE Issue分析写作从哪里入手
GRE写作范文辅导实例
GRE作文分类题库:政治类
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |