单项选择题

The officials called for an immediate ______ to determine the cause of the accident.

A．investigation
B．preparation
C．recognition
D．observation
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单项选择题
How many months of increase in job creation are there before January
A．Zero.
B．Four.
C．Forty one.
D．Eleven.
单项选择题
According to Jim Smith's prediction, how many new jobs would the U. S. economy create in December
A．1,000.
B．15,O00.
C．200,000.
D．115,OOO.
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