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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单项选择题
This may have preserved the elephant from being wiped out as well as other animals ______ in Africa.
A．hunted
B．hunting
C．that hunted
D．are hunted
单项选择题
What best describes the first English dictionary
A．It defined easy words as well as hard ones.
B．It was nothing more than a list of difficult words.
C．It presented good sentences to show how each word was actually used in speech and in writing.
D．It was the greatest improvement in the quality of dictionaries.
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