单选题Which of the following statements does NOT refer to smallpox?APrevious projects had failed.BPeople are no longer vaccinated for it.CThe World Health Organization mounted a worldwide campaign to eradicate the disease.DIt was a serious threat.

单选题
Which of the following statements does NOT refer to smallpox?
A

Previous projects had failed.

B

People are no longer vaccinated for it.

C

The World Health Organization mounted a worldwide campaign to eradicate the disease.

D

It was a serious threat.


参考解析

解析:
是非题。第二段最后一句提到“Because similar projects for malaria and yellow fever had failed, few believed that smallpox could actually be eradicated”,即以前对疟疾和黄热病开展的类似项目都失败了,因此几乎没有人相信天花可以被彻底根除。并不是说以前开展根除天花的项目失败了。因此选项A表述错误。

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