单项选择题

A．the author’s name.
B．the subject matter.
C．the publisher.
D．the title.
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单项选择题
A．Freshmen in the university.B．Teachers of different backgrounds.C．Students and teachers from computer college.D．Regular MA students and in-service teachers.
A．Freshmen in the university.
B．Teachers of different backgrounds.
C．Students and teachers from computer college.
D．Regular MA students and in-service teachers.
单项选择题
A．2.2 billion.B．2.2 millionC．293 million.D．293 billion.
A．2.2 billion.
B．2.2 million
C．293 million.
D．293 billion.
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