单项选择题

The jungles of the sub-Sahara, afflicted with tse-tse and mosquitos, is an unhealthy are

A． requiring inoculation againstB. heated byC. flooded byD. plagued by
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单项选择题
He covered the fish lavishly with sauce.
A．sparingly
B．completely
C．generously
D．simply
单项选择题
______this coming Thursday, it will be too late to enrol for the course.
A．As of
B．As for
C．As to
D．As on
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