单项选择题

The future ______ of the bald eagle is still an important American ecological concern.

A．birth
B．evolution
C．migration
D．survival
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单项选择题
Some conductors ______ sound amplification at their concerts.
A．let
B．allow
C．proscribe
D．permit
单项选择题
Cinderella's fairy godmother ______ a pumpkin into a carriage.
A．transformed
B．enclosed
C．spelled
D．juggled
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