单选题 Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be done at normal speed, listen and try to understand the meaning. For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase with intervals of 15 seconds. The last reading will be clone at normal speed again, and during this time you should check your work. You will then be given ONE minute to check through your work once more.
The air is seriously polluted, and the earth is partially poisoned.

【正确答案】The air is seriously polluted, and the earth is partially poisoned. Water is also unsafe to drink, and garbage is burying the civilization that produced it. This is happening not only in advanced societies but also in the developing countries. We have now come to realize that pollution is caused by man himself-by his greed and his modern way of life. The seriousness of the problem has led some experts to declare that the balance of nature is being so upset that the very survival of human beings is in danger.

【答案解析】[听力原文] The air is seriously polluted, and the earth is partially poisoned. Water is also unsafe to drink, and garbage is burying the civilization that produced it. This is happening not only in advanced societies but also in the developing countries. We have now come to realize that pollution is caused by man himself-by his greed and his modern way of life. The seriousness of the problem has led some experts to declare that the balance of nature is being so upset that the very survival of human beings is in danger.