Question

                       Noise Pollution

   Stop! Listen！ What do you hear? You may hear many different sounds. Some of those sounds may be noisy. Noise is loud or unwanted sound.

   Noise can be caused by many kinds of machines ，such as motorcycles ， jet planes ， tractors (拖拉机)and so on. And ，to some people, rock bands also cause noise.

   What happens to people living near noisy conditions? Doctors find that these people have trouble in sleepily. But most seriously, constant (持续的)loud noise can cause a loss of hearing.

   Scientists measure the loudness of a sound by decibel (分贝).The bigger the number of decibel is, the noisier it will be. The sound of a quiet room, foe example, measures 35 decibels. Talking measures between 40 and 65 decibels. Sounds from the traffic and some rock bands can measure over 120 decibels. Noise at this high level causes the greatest hearing loss.

任务一：将画线部分译成汉语。

1.____________________________

任务二:根据短文内容，回答问题。

2.What is noise?

___________________

3.What can cause noise?

________________

4.According to the passage,   what can loud noise cause?

_____________

任务三：根据短文内容，选择正确答案。

5.Study the chart below. Which room would be the quietest?(   )

 

Room	Noise Level
A	35 decibels
B	120 decibels
C	130 decibels
D	40 decibels

Answer 1

1.医生发现这些人睡眠有困难。

 2.Noise is loud or unwanted sound.

3.Noise can be caused by many kinds of machines ，such as motorcycles ，jet planes, tractors and so on.

4.Loud noise can cause a loss of hearing.

A