单项选择题

The most important question about the computer is ______ it has done and will do to man.

A．which
B．what
C．that
D．when
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单项选择题
Some of the meat smelt bad before reaching the market and ______ away.
A．could be thrown
B．must throw
C．had to be thrown
D．should throw
单项选择题
The Olympic Games, ______ in 776 B.C., did not include women players until 1912.
A．first playing
B．to be first played
C．first played
D．to be first playing
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