题目内容
【题目】 A survey of the opinions of experts that three hours of outdoor exercise a week is good for one’s health.
A. show B. shows C. is shown
【答案】B
【解析】
试题分析:句意:专家观点的调查表明在户外一周锻炼三个小时对健康有好处。主语是第三人称单数,和谓语动词之间事实主动关系,故选B。
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