单项选择题

The department chairman ______ with thanks the assistance of all the faculty members for getting the celebration ready in a short time.

A．expresses
B．declares
C．announces
D．acknowledges
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单项选择题
To test his theory, the chemist ______ an experiment.
A．set up
B．set out
C．set forth
D．set in
单项选择题
Edmund likes to drive at a speed ______ the traffic limit. I wonder how he always manages to escape ______.
A．having exceeded, to be fined
B．exceeded, having been fined
C．to exceed, to fine
D．exceeding, being fined
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