单项选择题

Man is most likely to be stricken with a cold if ______.

A．he often rubs his eyes or nose
B．he fails to expose the cold viruses to air
C．he visits his friend in a warm room
D．he shakes hands with a cold-sufferer

<上一题目录下一题>

热门试题

单项选择题

Up went the prices and ______.

A．the living standard came down
B．down did the living standard come down standard
C．came down the living standard
D．down came the living standard

单项选择题

There is no doubt ______ Herbert is the most industrious student in our class.

A．whether
B．what
C．that
D．if