单项选择题

Sucking proves effective only______.

A．when a patient is bitten by a fatal snake
B．when a child is not seriously injured
C．when other medical treatments fail
D．when parents are helpless
<上一题 目录 下一题>
热门 试题

单项选择题
What is the name of the movie Jennifer Anniston worked on recently
A．Mr. and Mrs. Smith
B．Along Came Polly
C．Troy
D．Friends
单项选择题
To take care of a light house, one must ______.
A．clean the windows around the light
B．sweep the ice and snow in the street
C．burn the candles
D．entertain the visitors
相关试题