单项选择题

The flashing red light served as a ______ of danger ahead.

A．predictor
B．caution
C．precaution
D．prevention
<上一题 目录 下一题>
热门 试题

单项选择题
We have in America a ______ speech that is neither American, Oxford English, nor English but a combination of the three.
A．hybrid
B．nasal
C．mangled
D．feigned
单项选择题
Weather exports use the ______ of the barometer as one of their guides in predicting the weather.
A．isobars
B．fluctuations
C．gradations
D．mercury
相关试题