单项选择题

The passage primarily discusses the pipeline's ______.

A．operating costs
B．employees
C．consumers
D．construction
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单项选择题
Which of the following is not mentioned in the passage as a factor that has contributed to creating an environment tolerant of or even favorable to drug abuse
A．The spreading of pop music.
B．The media.
C．Political campaigns run by powerful pressure groups.
D．The low price of some drugs,
单项选择题
How long did it take the patient to resume her normal activity after the operation ______.
A．24 hours
B．48 hours
C．About a week
D．Almost a month
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