单项选择题

In order to improve our standard of living, we have to accelerate production.______

A．step up
B．decrease
C．stop
D．control
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单项选择题
When he got out of the manager s office, from his facial expression we knew that his proposal must have been turned down.______
A．refused
B．accepted
C．adopted
D．denied
单项选择题
A lamp was suspendedfrom the ceiling.______
A．held
B．hooked
C．hidden
D．hung
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