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The present campaigns that doctors have begun are______. A. to save or rescue more than tw

题目

The present campaigns that doctors have begun are______.

A. to save or rescue more than two million people

B. to reveal the fight between doctors and mosquitoes

C. to support the WHO's effects in destroying mosquitoes

D. to kill all malaria-bearing mosquitoes before their resistance becomes too great

参考答案
正确答案:D
 [解析] 见最后一段第一句话。