单项选择题

However, at times this balance in nature is ___________ resulting in a number of possibly unforeseen effects.

A．disturbed
B．distributed
C．displayed
D．discovered
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单项选择题
Susan is sick, but she will be able to go to the Christmas party because her illness is ___________.
A．excessive
B．successive
C．temporary
D．contemporary
单项选择题
She is so lucky that she has won ___________ to a first-rate American university.
A．accordance
B．allowance
C．permission
D．admission
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