单项选择题

A．Cigarette ashes.
B．Nicotine.
C．Tar.
D．Not mentioned here.
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单项选择题
A．He will become a teacher.B．He will become a lawyer.C．He will try a lot of jobs.D．He has not decided yet.
A．He will become a teacher.
B．He will become a lawyer.
C．He will try a lot of jobs.
D．He has not decided yet.
单项选择题
A．The professor had written it.B．It is the major text for the course.C．It contains new sociological evidence.D．The students from last year liked it.
A．The professor had written it.
B．It is the major text for the course.
C．It contains new sociological evidence.
D．The students from last year liked it.
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