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

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单项选择题

My mother likes to have her hair（）

A. cured
B. carved
C. circled
D. curled

单项选择题

I don't know（）it was that answered the phone this morning

A．who
B．why
C．how
D．that

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