单项选择题

Evidence exists that hearing problems may be alleviated by changes in diet and exercise habits.

A．initiated
B．lessened
C．cured
D．complicated
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单项选择题
In the phenomenon of atomic fission, the nucleus is split into two pieces of approximately equal mass.
A．doubly
B．always
C．solidly
D．about
单项选择题
Jane was quite annoyed(下划线) with Jerry for arriving so late.
A．put off
B．put on
C．put down
D．put out
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