单项选择题

The ability to store knowledge makes computers different from every other machine______ invented.

A．ever
B．thus
C．yet
D．as
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单项选择题
The suggestion that the mayor ______ the prizes was accepted by everyone.
A．would present
B．present
C．presents
D．ought to present
单项选择题
How is it______ your roommate’’s request and yours are identical
A．if
B．so
C．what
D．that
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