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试题详情及答案解析
—Students should do sports _______one hour a day.
—I agree. It’s good for their health.
A.of courseB.as long as
C.at leastD.in fact
答案:C
试题分析:句意:——学生们应该每天做至少一个小时的运动。——我同意,这对他们的身体有好处。of course当然;as long as只要……就;at least至少; in fact事实上。根据题意,故选C。
考点:考查介词短语。