【題目】___ regular exercise is very important, it’s never a good idea to exercise too close to bedtime.

A. It B. As C. Although D. Unless

【答案】C

【解析】although“盡管”; As “如”; Unless “除非”。句意為：盡管有規(guī)律的運(yùn)動(dòng)很重要，但是在睡前運(yùn)動(dòng)不是一個(gè)好主意。

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