单项选择题

The scientists began to accumulate a huge mass of data.

A．build up
B．put up
C．make up
D．clear up
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单项选择题
Why can't you stop your eternal complaining!
A．everlasting
B．long
C．monotonous
D．lengthy
单项选择题
Hundreds of buildings were wrecked by the earthquake.
A．shaken
B．fallen
C．damaged
D．trembled
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