单项选择题

The magician picked several persons ______ from the audience and asked them to help him with the performance.

A. by accident
B. at random
C. on occasion
D. on average
<上一题 目录 下一题>
热门 试题

单项选择题
Whether an operation should be performed in this case ______very much on the patient’s general condition.
A. relies
B. counts
C. centers
D. depends
相关试题