单项选择题

Questions 22 ～ 25 are based on the following monologue. What is the substance in cigarettes that causes cancer

A．Cigarette ashes.
B．Nicotine.
C．Tar.
D．Not mentioned here.
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单项选择题
A．affectedB．effectedC．takenD．adapted
A．affected
B．effected
C．taken
D．adapted
单项选择题
What is the woman’s major
A．American literature.
B．English literature.
C．Teaching method.
D．Mathematics.
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