25．If you sleep short of 7 hours, you are three times _______ to catch a cold．A．

题型：不详难度：来源：

25．If you sleep short of 7 hours, you are three times _______ to catch a cold．

A．possible

B．certainly

C．probable

D．likely

答案

D

解析

考查形容词。three times是修饰词语，若将其去掉，则可将A、C项排除。因为possible和probable的主语不能是具体的人或物。B项是副词不能做表语，故选D。