Millions of people are in danger of getting malaria because______. -题库考试答案搜索网

Millions of people are in danger of getting malaria because______.

单选题

2022-03-26 01:03

A、some countries have not started a campaign against mosquitoes
B、new species of mosquitoes may survive today's sprays
C、malaria was once thought to be a very old evil of the world
D、present sprays are not as effective as people think

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正确答案

B

试题解析

[解析] 见第二段最后一句话。

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