单项选择题

The computer of the airports have helped people greatly. ______, more people travel by plane in Chin

A．A. In factB. At leastC. At one timeD. As a result
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单项选择题
Bob is not a person ______ you can borrow any money though he is rich.
A．who
B．whom
C．from whom
D．from who
单项选择题
The number of the newly admitted students ______ over 300, but a number of them ______not arrived yet.
A．is, has
B．are, have
C．is, have
D．are, has
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