单项选择题

I catch a cold now and then .

A．always
B．occasionally
C．constantly
D．regularly
<上一题 目录 下一题>
热门 试题

单项选择题
Professor Taylor s talk has indicated that science has a very strong influenceon the everyday life of non-scientists as well as scientists.
A．motivation
B．perspective
C．impression
D．impact
单项选择题
The tomato juice left a brown stainon the front of my jacket.
A．track
B．trace
C．spot
D．point
相关试题