单项选择题

Modern medicine and new methods of food production allow adults to live longer and babies to ______ easier.

A．exist
B．extinct
C．survive
D．revive
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单项选择题
Lame as he is, he is interested in so many things and enjoys reading about them so much that he is ______ unhappy.
A．anything but
B．nothing but
C．rather than
D．more than,
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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