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  3. Our environment is getting worse and worse with the increase of the world population, which affects the environment in two ways.

Our environment is getting worse and worse with the increase of the world population, which affects the environment in two ways.

admin2015-02-09  63
问题     Our environment is getting worse and worse with the increase of the world population, which affects the environment in two ways. Firstly, the limited energy resources will be used up much faster. Secondly, the increasing population creates more pollution, another severe problem that needs to be solved. Both problems are long-term ones because actions taken now show their results slowly over many years. They are also urgent because delays in action can lead to great suffering and social problems. The question seems to be difficult to handle for most people. However, a person can be a protector of environment in everyday life if he takes actions to save the environment right now. With the development of technology, cars make transportation easier and quicker than before, but we can’t ignore the disadvantages brought to us by more and more cars in use. For example, we are consuming gasoline(汽油), which is a non-renewable(无法更新的)resource, and will soon be gone. Moreover, the exhausted gas from cars pollutes our air, and our health is therefore threatened by air pollution, which has a big potential effect on our daily life. So we can consider walking, taking buses, carpooling(合用汽车), instead of driving cars alone. This seems to be a very slow process that can’t be so effective if it’s taken by a single person But when more and more people become aware of the importance and positively take it as their personal responsibilities, the condition of the air will be improved to a great extent.
The author’s main purpose in writing this passage is most probably to______.
选项 A、advise people to take actions to protect the environment
B、complain about people’s slow actions to protect the environment
C、show himself to be an active environment protector
D、point out the bad effects of technologies on protecting environment
答案A
解析 主旨题。作者文中首先提出了环境恶化问题，然后又指出只要社会上越来越多的人开始采取措施保护环境，环境会在很大程度上得以改善，由此可见，作者写这篇文章的目的是为了建议人们采取措施保护环境。另外，根据主旨题的答案来自文章主题句的原则，本题答案也可由主题句直接推导得出。
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