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. 1.According to the writer , the main problem to our environment today is ______. A ) the increase of population B ) the limited energy resources C ) the more serious air pollution D ) the development of technology 2.From the passage , we can know that ______. A ) effective measures can be taken mainly by the government B ) taking measures now can soon improve the environment C ) immediate measures can cause great suffering and social problems D ) every single person's action has some effect on environment protection 3.The author's main purpose in writing this passage is most probably to ______. A ) complain about people's slow actions to protect the environment B ) advise people to take actions to protect the environment C ) show himself to be an active environment protector D ) point out the bad effects of technologies in protecting environment 4.The author believes that carpooling ______. A ) can give help to those without cars B ) can save people money and time C ) can save energy resources and reduce air pollution D ) can promote friendship among drivers 5.The passage is mainly about ______. A ) energy resources saving B ) environment protection C ) population control D ) air pollution