单项选择题


A．expand
B．transform
C．economize
D．propagate
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单项选择题
A．go to the teacher’s office after should.B．make an appointment in advance.C．go to the teacher’s at working hours.D．discuss the questions in class.
A．go to the teacher’s office after should.
B．make an appointment in advance.
C．go to the teacher’s at working hours.
D．discuss the questions in class.
单项选择题
A．the author’s name.B．the subject matter.C．the publisher.D．the title.
A．the author’s name.
B．the subject matter.
C．the publisher.
D．the title.
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