An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answe

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问题 An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage. This question is worth 2 points.
    In early March 1997, a farmer from Hong Kong died of avian flu which later came to official attention.
Answer Choices
A. As one of the most changeable viruses known to man, flu can change the cells of humans so as to infect humans after humans have been ill with one strain. Humans are immune to the flu their bodies have experienced before.
B. The contagious chain effect of H5N1 from the virus itself to an animal which passes it on to humans who infect their peers in a simple cough or sneeze can spark a world outbreak.
C. It was found by the Agriculture and Fisheries Department laboratory that H5N1, a kind of virus was the prime culprit in this catastrophe.
D. After H5 suddenly appeared in Hong Kong, flu experts were worried that this flu, which had already been very likely to cause death of humans, might learn to move between them toe.
E. In order to cure the infection by Spanish flu, three measures need be adopted by all nations, which are better surveillance, more vaccines and flu shots, and a strong pandemic plan.
F. Most countries don’t start tracking avian flu until after an epidemic kills their chickens. The United States dramatically increased its monitoring after a deadly outbreak in Pennsylvania in the early 1980s.

选项

答案B. The contagious chain effect of H5N1 from the virus itself to an animal which passes it on to humans who infect their peers in a simple cough or sneeze can spark a world outbreak. C. It was found by the Agriculture and Fisheries Department laboratory that H5N1, a kind of virus was the prime culprit in this catastrophe. E. In order to cure the infection by Spanish flu, three measures need be adopted by all nations, which are better surveillance, more vaccines and flu shots, and a strong pandemic plan.

解析 本题为篇章总结题,考查考生理解全篇中心思想和相关重要信息的能力,考生通过区分主要观点和次要观点以及文章中没有提及的观点达到总结全篇的目的。本文主要描述了香港一个农民如何染上禽流感,如何引起各国对此病毒的重视,专家又是如何对此病毒的携带者、传染渠道等进行研究,最后提出如何进行预防和防治的方案,即表中的选项B、C、E三个要点。
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