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
The full ______ of changes in computer technology will be felt within the next few years.
A．affect
B．impact
C．action
D．importance
单项选择题
The coming of automation is ______ to have important social consequences.
A．like
B．frightful
C．bound
D．compelled
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