单项选择题


Questions 22 - 25 are based on the following monologue.
Why do smokers welcome low-tar cigarettes

A．Because they are less harmful.
B．Because they cost less.
C．Because they taste better.
D．Because they last longer.
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单项选择题
No one can expect to fully enjoy the adulthood privileges until he is ______.
A．eleven years old
B．sixteen years old
C．twenty-one years old
D．between twelve and twenty-one years old
单项选择题
A．keep quietB．stay behindC．take a napD．join them
A．keep quiet
B．stay behind
C．take a nap
D．join them
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