单项选择题

Cancer is a group of diseases in which there is uncontrolled and disordered growth of ______ cells.

A．controversial
B．abnormal
C．inferior
D．irrelevant
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单项选择题
We shall send you commercial invoice, bills of lading and insurance certificates so that you can ______ the goods on a D P basis.
A．consume
B．complain
C．concern
D．claim
单项选择题
The U.S. government places rigid restrictions ______ the type of high-technology products that can be exported to China.
A．for
B．in
C．to
D．on
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