单项选择题

A．To attend a conference.
B．To see the planetarium.
C．To change planes.
D．To go sightseeing.
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单项选择题
A．In the early 1900’s.B．In the mid-1800’s.C．In the early 1800’s.D．In the late 1800’s.
A．In the early 1900’s.
B．In the mid-1800’s.
C．In the early 1800’s.
D．In the late 1800’s.
单项选择题
A．Book publishers.B．Librarians.C．New university students.D．Faculty members.
A．Book publishers.
B．Librarians.
C．New university students.
D．Faculty members.
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