单项选择题

Because of the complexity of the modern machine, most offices require secretaries （）

A．to train specifiedly
B．to have specified training
C．specified in training
D．training specified

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单项选择题
The children listened （） to the words of their father.

A．respectively
B．respectfully
C．respectantly
D．respectably
单项选择题
A blinding （） of lightning flashed across the sky.

A．strip
B．stripe
C．band
D．streak
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