Psychologists now believe that noise has a considerable effect on people’s attitudes and behavior. Experiments have proved t

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问题     Psychologists now believe that noise has a considerable effect on people’s attitudes and behavior.
    Experiments have proved that in noisy situations (even temporary ones), people become more irritable and less cooperative; in more permanent noisy situations, many people cannot work hard, and they suffer from severe anxiety as well as other psychological problems. However, psychologists distinguish between "sound" and "noise". "Sound" is measured physically in decibels (分贝). "Noise" cannot be measured in the same way because it refers to the psychological effect of sound and its level of "intensity" depends on the situation.
    Thus, for passengers at an airport who expect to hear airplanes taking off and landing, there may be a lot of sound, but not much noise (that is, they are not bothered by the noise). By contrast, if you are at a concert and two people behind you are whispering, you feel they are talking noisily even if there is not much sound. You notice the noise because it affects you psychologically. Both sound and noise can have negative effects, but what is most important is if the person has control over the sound. People walking down the street with earphones, listening to music that they enjoy, are receiving a lot of decibels of sound, but they are probably happy hearing sounds which they control. On the other hand, people in the street without earphones must tolerate a lot of noise which they have no control over. It is noise pollution that we need to control in order to help people live more happily.  
We can conclude from the passage that we need to control noise pollution if______.

选项 A、we want to stay both psychologically and physically healthy
B、we don’t want to be physically deaf
C、we want to cooperate well
D、we don’t want to be anxious

答案A

解析 本题是一道总结归纳题。问我们可以从文章中得出结论,如果怎样,我们必须控制噪音污染。根据文章全文内容和最后几句话,另外,街上不戴耳机的人们不得不忍受大量的不能控制的噪声。我们需要控制的是噪声污染,这样才有助于人们生活得更愉快。因此,为了生活愉快保持身心健康,我们需要控制噪音污染。所以,本题的正确答案应是A。
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