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

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

选项 A、requiring inoculation against
B、heated by
C、flooded by
D、plagued by

答案 D

解析

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