单项选择题

The old farmer was run down by a car. He was taken to the hospital and ______ on by the chief surgeon right now.

A．operated
B．having been operated
C．is operated
D．is being operated
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单项选择题
When you put up wallpaper, should you ______ the edges or put them next to each other
A．coincide
B．extend
C．overlap
D．collide
单项选择题
The Second World War, ______ the earlier one of 1914, prompted public concern about the physical and intellectual well-being of the country's human resources.

A．so as
B．as were
C．as did
D．same as
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