单项选择题

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

A．attempt
B．expedition
C．trial
D．chase
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单项选择题
In the past decade skyscrapers have developed ______ in this newly emerging city.
A．homogeneously
B．simultaneously
C．spontaneously
D．anonymously
单项选择题
______ she realized she was in great danger.
A．No sooner the gangster took out the gun than
B．It was not until the gangster took out the gun that
C．Scarcely had the gangster took out the gun that
D．Hardly did the gangster took out the gun that
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