A survey of the opinions of students______that they also admit several hours of sitting in front of the computer______harmful fo

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问题 A survey of the opinions of students______that they also admit several hours of sitting in front of the computer______harmful for one’ s health.

选项 A、show: are
B、shows: is
C、show: is
D、shows: are

答案B

解析 主句的中心词是a survey,所以谓语动词应用单数形式shows。admit后面是省略了that的宾语从句,从句的主语是several hours of sitting in front of the computer,其中several hours是中心词,是表示时间的复数名词,被看作整体,作主语时,谓语动词应用单数形式,即is。故选B。
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