单项选择题

Many things ______impossible in the past are common today.

A．to consider
B． considered
C．considering
D．being considered
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单项选择题
We haven't the ______idea of what you meant.
A．smallest
B． dimmest
C．weakest
D．slightest
单项选择题
Age is not important. It's brains and knowledge that______.
A．judge
B．impress
C． count
D．survive
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