单项选择题

A．Lowering its prices.
B．Selling more household necessities.
C．Changing its membership rules.
D．Opening up more checkout lines.
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单项选择题
A．A report.B．A book review.C．A research study.D．A five-page composition.
A．A report.
B．A book review.
C．A research study.
D．A five-page composition.
单项选择题
Before DNA fingerprinting is used, suspects ______.
A．would have to leave their fingerprints for further investigations
B．could easily escape conviction of guilt
C．would have to submit evidence for their innocence
D．could be convicted of guilt as well
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