2. 外语
  3. A well-documented body of information exists. It shows that noise can【C1】______humans in both physiological and psychological wa

A well-documented body of information exists. It shows that noise can【C1】______humans in both physiological and psychological wa

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问题     A well-documented body of information exists. It shows that noise can【C1】______humans in both physiological and psychological ways. Hearing losses in【C2】______occupations such as boiler-making and construction work are well known. In fact,【C3】______, we all find hearing more difficult as we【C4】______. Young ears can distinguish a wide【C5】______of sounds from low to very high frequencies,【C6】______older ears lose the ability to distinguish high-pitched sounds. A comparison of some【C7】______versus (与......相对) non-industrialized peoples suggests that this heating loss may not be the must-be result of old age.【C8】______,.a closer examination of other data reveals【C9】______effects. For instance, airports are currently operating at【C10】______capacity because of noise regulations which【C11】______their hours of operation. Job performance call be seriously affected by loud noise, especially if accuracy and【C12】______effort are involved. The Use of outdoor areas for conversation is not possible for an【C13】______5 to 10 million people who live or work in urban areas. When【C14】______with television or speech or sleep is【C15】______, as many as 22 to 44 million people can be said to have【C16】______part of the use of their homes and grounds because of noise.【C17】______noise pollution is a serious environmental【C18】______.
    Much more【C19】______should be made to warn people【C20】______the grave effects which may stem from an excessively noisy environment.
【C6】
选项 A、although
B、therefore
C、while
D、so
答案C
解析
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大学英语四级

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