Malaria is an infectious parasitic disease that can be either acute or chronic a

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问题 Malaria is an infectious parasitic disease that can be either acute or chronic and is frequently______.

选项 A、repeating
B、terminal
C、debilitating
D、recurrent

答案 D

解析本题空格处是说经常复发。D项recurrent“复发的”符合题意。其他三项re—peating“重复的”，terminal“末期的”，debilitating“衰弱的”都不正确。

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