单项选择题

The exercises you do next will be a little less precise in form due to ______and therefore less effective.

A．length
B．fatigue
C．excitement
D．irritation
<上一题 目录 下一题>
热门 试题

单项选择题
______is not only the health of humans but that of the earth.
A．At cost
B．At stake
C．At length
D．At intervals
相关试题