单项选择题

We demand some tangible proof of our hard work in the form of statistical data, a product or a financial reward.

A．intelligible
B．infinitive
C．substantial
D．deficient
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单项选择题
Throughout most of the recorded history, medicine wasanything butscientific.
A．more or less
B．by and large
C．more often than not
D．by no means
单项选择题
She fellawkwardlyand broke her leg.
A．embarrassingly
B．reluctantly
C．clumsily
D．dizzily
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