单项选择题

Paul is an ______ worker, and rarely does well in examinations. However he often refuses our help.

A．errant
B．erroneous
C．erratic
D．exotic
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单项选择题
Telecommuting—substituting the computer for the trip to the job—has been ______ a solution to all kinds of problems related to office work.
A．hailed as
B．drawn out
C．borne out
D．lodged in
单项选择题
After speaking for three hours, the lecturer found he could scarcely talk, as he had become ______ .
A．dumb
B．inarticulate
C．hoarse
D．speechless
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