单项选择题

The percentage of cocaine brought through the coast has increased by ______.

A．10%
B．50%
C．60%
D．70%
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单项选择题
Which group of people is now taking advantages of the agreement
A．Canadian police.
B．Businessmen.
C．Drug traffickers.
D．Customs officers.
单项选择题
What steps have been taken by big airlines according to the passage
A．To reduce air fares.
B．To streamline airline structures.
C．To readjust their marketing strategy.
D．To pursue marketing alliances.
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