单项选择题

Scientists are______certain that there is a cancer-inhibiting agent in the blood of the shark.

A．dubiously
B．virtually
C．queerly
D．randomly
<上一题 目录 下一题>
热门 试题

单项选择题
In a divorce, the mother usually is granted______of her children.
A．support
B．retention
C．perseverance
D．custody
单项选择题
Attempts to persuade her to stay after she felt insulted were______.
A．of no avail
B．out of focus
C．at a loss
D．in no way
相关试题