单项选择题

We were heartedly arguing about the financial matter, ______ the telephone rang unexpectedly.

A．while
B．as
C．when
D．as soon as
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单项选择题
Mary always ______ things over with her parents before she makes an important decision.
A．says
B．talks
C．tells
D．states
单项选择题
Care should be taken to decrease the length of time that one is ______ loud continuous noise.
A．subjected to
B．filled with
C．associated with
D．attached to
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