单项选择题

In his ______ to further knowledge of the universe, man has now begun to explore space.

A．attempt
B．expedition
C．trial
D．chase
<上一题 目录 下一题>
热门 试题

单项选择题
The senator agrees that his support of the action would ______ his chances for reelection.
A．obscure
B．mystify
C．distinguish
D．jeopardize
单项选择题
The young man who saw the car ______ into the river telephoned the police.
A．plunged
B．plunge
C．was plunging
D．to plunge
相关试题