What is the authors purpose by concluding his article with a story？
A. To show that though we have made great progress in development we lost our direction in the modern society.
B. To illustrate that we are now in the process of flying a plane with a confused pilot driving it.
C. To prove that neither flying a lost plane nor directing the way of a plane is an easy job.
D. To make sure that everybody is the cause of our world pollution through everybody"s making rapid progress.
查看答案
低、中放废物处置场关闭后，进入有组织()期。
A. 管理
B. 控制
C. 监管
D. 监测
Why do people constantly move from the countryside into the cities？
A. Because the earth in the countryside was polluted.
Because there are more jobs provided in the cities.
C. Because it is easier to make a living in the cities.
D. Because they are eager to get the benefits of modern cities.
Which of the following sentences is not true according to the author？
A. The author wants to tell us that pollution is a serious problem caused by man.
B. We can stop this trend of pollution merely by our own efforts.
C. Many scientists show their worry about the world pollution.
D. The pollution of the earth will threaten the human being"s survival.
Who caused this problem according to the passage？
A. The motor cycles.
B. The growing industries.
C. The human beings.
D. The larger cities.
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