单项选择题

A. Read the operational manual.
B. Try the buttons one by one.
C. Make the machine run slowly.
D. Ask her instructor for advice.
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单项选择题
A. Great pressure on housing.B. Rising demands of goods.C. The prosperity of the building industry.D. A declining market for manufactured goods.

A. Great pressure on housing.
B. Rising demands of goods.
C. The prosperity of the building industry.
D. A declining market for manufactured goods.
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