【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)律的運動很重要，但是在睡前運動不是一個好主意。

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