单项选择题

The leaves have been swept into huge heaps .

A．loads
B．layers
C．pyramids
D．piles
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单项选择题
He was acquitted on charges of assault with a deadlyweapon.
A．worrying
B．fatal
C．serious
D．contagious
单项选择题
Birds are abundantin the tall vegetation.
A．meager
B．extra
C．plentiful
D．steady
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