单项选择题

A．there are
B．they are
C．there is
D．it is
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单项选择题
A．searchingB．searching forC．searching inD．searching into
A．searching
B．searching for
C．searching in
D．searching into
单项选择题
A．made up ofB．made ofC．consisting ofD．composed of
A．made up of
B．made of
C．consisting of
D．composed of
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