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试题详情及答案解析
Walking in the morning _______ your health.
A. are good for
B. is good for
C. is good at
答案:B
试题分析:be good for对……有好处;be good at擅长某事,句意:在早晨散散步对你的健康有好处。动名词做主语表示抽象动作,故系动词用单数,选B。
考点:考查短语辨析及主谓一致