单项选择题

It is reported that there in no better（）for human's hands.

A．alternative
B．equivalence
C．exchange
D．substitute

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单项选择题
Mary had always refused to cooperate with others because she believed that she could do better（）

A．single-handed
B．than anybody
C．in person
D．all her own
单项选择题
He was actually（）for the accident, though it had not in fact been his fault.

A．accused
B．blamed
C．condemned
D．criticized
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