閱讀短文,然后根據(jù)內(nèi)容選擇正確答案。

  When you see the word dangerous, what do you think about?Fire?Guns?Broken glass?How about noise?Can noise be dangerous?Can it hurt you?Do you think it is a kind of pollution?

  Most people would say that noise is loud, unwanted sound.They think of the roar of traffic, the scream of jet planes, and the howl of a sick animal.But what about rock music?Is the sound of music noise?

  Sounds can be measured to find out how loud they are.Your hearing can also be measured.Tests were done on people who work with very loud machines for a long time.The tests showed that some of these people had a loss of hearing.People who race cars, fly jet planes, or play in rock bands may also have hearing problems.

  Tests also show other changes in people who work in loud, noisy places.These changes can take place in the way people breathe or see or think or move or feel.Can noise be dangerous?Is it a kind of pollution?

(1)

To see how loud a sound is, we must ________.

[  ]

A.

change it

B.

measure it

C.

time it

D.

control it

(2)

Tests show a loss of hearing in people who ________.

[  ]

A.

measure loud sounds

B.

play rock music on their radios

C.

work with very loud machines for a long time

D.

drive cars

(3)

Which of the following can be dangerous?

[  ]

A.

All sounds.

B.

Most sounds.

C.

Very loud sounds.

D.

No sounds.

(4)

Another title for this story could be ________.

[  ]

A.

“Sounds Can Be Measured”

B.

“Noise Can Be Dangerous”

C.

“How to Test Your Hearing”

D.

“Hearing Is Important”

(5)

People who fly jet planes may have hearing problems.One reason may be that jets ________.

[  ]

A.

fly too fast

B.

fly too high above the ground

C.

make a loud noise on takeoff and landing

D.

fly suddenly

答案:1.B;2.C;3.C;4.C;5.C;
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