单项选择题

Mr. Morton gradually ______ a knowledge of the subject.

A．attained
B．required
C．acquired
D．enquired
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单项选择题
China started its nuclear power industry only in recent years, and should ______ no time in catching up.
A．delay
B．lose
C．lag
D．lessen
单项选择题
His parents gave many expensive toys as a kind of ______ for his lameness and inability to play active games.
A．remedy
B．compensation
C．treatment
D．comfort
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