单项选择题

This book deals with questions______ China' s Agrarian Revolutionary War.

A．concerned
B．concerned over
C．concerning with
D．concerning
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单项选择题
For some rare cases, the doctor does not base his diagnosis on the patient' s______ only but also on the results of tests.
A．complaints
B．reports
C．statements
D．symptoms
单项选择题
It is true that road travel in the old days was difficult,______ and uncomfortable, but it was comparatively safe.
A．tedious
B．irritable
C．worrying
D．disinteresting
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