1.噪音对人的危害。
2.按噪音等级由低到高的顺序(或:噪音对人的影响程度的大小顺序;逻辑顺序安排的。更清晰地表明强度不同的噪音对人造成不同程度的危害(或:使文章条理更清楚。
3.变得越来越差列数字举例子作比较
4.A
Last Sunday, Jim went out to fly a kite. The kite flew highly in the sky. Jim ran with it happily.
Suddenly the line was broken and the kite flew away. Soon it disappeared. Where was it?
Jim had no idea. So he had to run here and there to look for the kite. At last he saw it on the top of the tree. He tried to get it down. But he couldn’t. He felt sad.
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