单项选择题

The ship's generator broke down, and the pumps had to be operated by hand.

A．manually
B．artificially
C．automatically
D．synthetically
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There was a Jewish trader, who had come by one of Strickland's pictures in a(n) peculiar way.
A．single
B．singular
C．elaborate
D．essential
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The holder of this letter is my student who shows great promise in language learning, and I should like to introduce him to you.
A．requirement
B．desire
C．will
D．hope
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