单项选择题

It can be inferred that the author is ______ the potential effectiveness of the Department of Homeland Security.

A．uncertain about
B．dubious about
C．confident of
D．critical about
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单项选择题
According to the author, the following EXCEPT ______ are good reasons for keeping a diary.
A．retaining one's own excitement
B．recording one's private matters
C．overcoming one's shyness
D．helping one calm down
单项选择题
The establishment of the DHS will involve all the following EXCEPT ______.
A．institutional reorganization
B．expansion of personnel
C．increase of budget
D．closure of some departments
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