单项选择题

Iron and steel are flexible. But they are not as flexible ______ rubber.
A) as C) to
B) for D) by

A．Iron and steel are flexible. But they are not as flexible ______ rubber.
B．as
C．for
D．to
E．by
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单项选择题
New technologies and skills will speed up the ______ of information. A) transfer C) traffic B) trip D) transport
A．New technologies and skills will speed up the ______ of information.
B．transfer
C．trip
D．traffic
E．transport
单项选择题
Mr. and Mrs. Smith and a friend of ______ are coming to see me this afternoon. A) theirs C) hers B) their D) her
A．Mr. and Mrs. Smith and a friend of ______ are coming to see me this afternoon.
B．theirs
C．their
D．hers
E．her
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