单项选择题

The review of literature section allows plenty of space for discussing the many ______of the problem and related research.

A．fashions
B．frontiers
C．facets
D．formats
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单项选择题
It is unreasonable to battle the______ by increasing the tariff rate.
A．disposition
B．discrepancy
C．defect
D．deficit
单项选择题
The airline says it will be difficult to______ all the bodies retrieved from the crash.
A．signify
B．identify
C．claim
D．recognize
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