单项选择题

If any law and order（）not maintained, neither the citizen nor his property is safe

A．be
B．are
C．were
D．is

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单项选择题

She was extremely lucky; when her great-uncle died, she（）a fortune.

A. came by
B. came over
C. came into
D. came about

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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