单项选择题

She could fix machine without referring to the instructions.

A．observing
B．learning
C．consulting
D．understanding
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单项选择题
Don't hazard your reputation by supporting his joint venture with the gay from Los Angels.
A．adventure
B．risk
C．threaten
D．venture
单项选择题
He confesses that he has done it.
A．agrees
B．alleges
C．admits
D．answers
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