单项选择题

Now a paper argues that organic chemicals in the rock come mostly from ______ on earth rather than bacteria on Mars.

A．configuration
B．constitution
C．condemnation
D．contamination
<上一题 目录 下一题>
热门 试题

单项选择题
The way other people behave towards us influences how we ______ ourselves.
A．conceive of
B．consist of
C．confront with
D．conform to
单项选择题
There is no known cure for SARS, but doctors are developing ways to help sufferers ______ it.
A．retard
B．eliminate
C．dispense
D．handle
相关试题