单项选择题

One significant improvement in the future car will probably be（）

A．its power source
B．its driving system
C．its monitoring system
D．its seating capacity

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单项选择题
The ship's generator broke down, and the pumps had to be operated （） instead of mechanically.

A．manually
B．artificially
C．automatically
D．synthetically
单项选择题
The boy spent as much time watching TV as he （） studying.

A．does
B．had
C．was
D．did
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