单项选择题

A．it
B．those
C．this
D．that
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单项选择题
A．increasinglyB．increasingC．increaseD．increased
A．increasingly
B．increasing
C．increase
D．increased
单项选择题
A．complicatedB．simplifiedC．simplestD．unmistakable
A．complicated
B．simplified
C．simplest
D．unmistakable
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