单项选择题

Some plants are so sensitive ______ pollution that they can only survive in a perfectly clean environment.

A．from
B．against
C．to
D．with
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单项选择题
The rapid development of communications technology is transforming the ______ in which people communicate across time and space.
A．manner
B．mood
C．mission
D．vision
单项选择题
She may come with us ______ that she arrives in time.
A．hence
B．otherwise
C．so
D．provided
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