单项选择题

How can we reduce the risk of cancer

A．cut in
B．cut down
C．cut off
D．cut out
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单项选择题
During the past ten years there have been dramatic changes in the international situation.
A．permanent
B．powerful
C．striking
D．practical
单项选择题
He is said to be suffering from terminal cancer and has asked for euthanasia (安乐死).
A．acute
B．chronic
C．final
D．fatal
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