单项选择题


A．concerns
B．issues
C．advantages
D．problems
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单项选择题
A．getting overB．getting inC．getting backD．getting along
A．getting over
B．getting in
C．getting back
D．getting along
单项选择题
A．dependentB．a good source of informationC．of great valueD．reliable
A．dependent
B．a good source of information
C．of great value
D．reliable
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