单项选择题

A light sleeper is usually very ______ to any sound even as inaudible as the humming of a mosquito.

A．acute
B．keen
C．alert
D．immune
<上一题 目录 下一题>
热门 试题

单项选择题
The trouble seems to be that income tax is progressive, so that the richer you get, the less rich you are than ______.
A．what you think you ought to be
B．what you thought you ought to be
C．what you thought you should be
D．you think you ought to be
单项选择题
Educators are now recommending that reasoning skills ______ in the class room since recent tests indicate that many teachers in the past have ignored these skills.
A．are emphasized
B．must be emphasized
C．would be emphasized
D．should be emphasized
相关试题