A、Somalia is re-infected with polio virus. B、Somalia has successfully eradicated polio. C、Somalia suffers from indigenous polio.

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问题  
Polio has been eliminated from Somalia as no case of the disease has been reported for exactly one year, the UN World Health Organization says. The WHO described it as a "landmark victory" and a testimony to the efforts of more than 10,000 volunteer workers.The country has been riven by war and violence since 1991 and has no central government or detailed medical data. But a WHO spokesman said the UN’s network of monitors made it confident in its assessment.
  Somalia’s last case of indigenous polio was in 2002, but it was re-infected three years later with the virus originating from Nigeria.The last case was reported on March 25th. 2007 in central Somalia. The disease, which causes paralysis, has been eliminated in developed nations but persists in parts of India, Nigeria, Afghanistan and Pakistan.

选项 A、Somalia is re-infected with polio virus.
B、Somalia has successfully eradicated polio.
C、Somalia suffers from indigenous polio.
D、Polio still persists in developing countries.

答案B

解析 新闻提到,世界卫生组织认为,由于整整一年未发现病例,索马里已消灭了小儿麻痹症,接着肯定这一胜利的意义,并指出该数据的可靠性,可见B为正确答案。
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