单项选择题

Bronze ______ with use or grow brittle quickly, as copper does.

A．not bending
B．does not bend
C．that does not bend
D．to not bend
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单项选择题
His devotion to helping those in need was not noticeably ______ by the fact that he had not adequate wealth for his own daily expense.
A．prevented
B．retrained
C．hindered
D．refrained
单项选择题
Our country had made great efforts to promote the family-planning policy, but ______ the birth rate is getting higher and higher.
A．as it were
B．as it is
C．as it was
D．as is it
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