Unit 1 Great Scientists Ⅰ.阅读理解 A (2015·青岛市二模) Scientists investigated why Ebola virus is so deadly when it spreads from animals to humans and then from human to human contact. The research team looked at the Zaire Ebola virus in an animal system to understand how it gains strength. This virus is responsible for the current outbreak in West Africa. They found that initially the animal systems were not affected by the virus, but succeeding transmission(传送) into other animals caused the virus to “hot up” and become more severe. The team analyzed the viruses at different stages and were able to identify several changes in its genetic material that were associated with increased disease. Professor Julian Hiscox, who led the study from the University's Institute of Infection and Global Health, explains: “The work tells us that the evolutionary goal of Ebola virus is to become more fatal.” “We were able to show through genetic analysis which parts of the virus are involved in this process. The information we have gathered will now allow us to monitor for such changes in an outbreak as well as develop future treatment strategies.” Professor Roger Hewson, leading the study from Public Health England, Porton Down, said: “Ebola virus is such a destructive infection to the people affected by the disease and the economy of West Africa.” “Our understanding of Ebola virus biology is way behind that of other viruses and our cooperation shows how we can bring together our specialists' skills to close this knowledge gap.” Professor Miles Carroll, a co author of the work, said: “This study has allowed the team to be at the forefront of developing methodologies to analyze patient samples recently taken by the European Mobile Laboratory from West Africa to understand disease evolution during the current outbreak.” 文章大意：本文是医疗科研报告。文章主要讲述了关于埃博拉病毒的研究进展情况，该病毒与什么有关系，该如何控制该病的疫情。 1．What does the first paragraph mainly tell us A．How severe Ebola virus is. B．How Ebola virus spreads. C．How Ebola virus gradually becomes deadly. D．What contributions scientists have made on Ebola virus. 答案：C 主旨大意题。A项埃博拉病毒有多严重；B项埃博拉病毒是如何传播的；C项埃博拉病毒是如何变得致命的；D项科学家们为埃博拉病毒做出了什么样的贡献。根据题干关键词the first paragraph。通读第一段，并根据第一句话Scientists investigated why Ebola virus is so deadly when it spreads from animals to humans and then from human to human contact可知该段的大意是埃博拉病毒是如何逐渐变得致命的。故选C。 2．Which of the following statements is mentioned in the passage A．In the first stage, the virus hurts its victims much. B．As the virus spreads, it'll change and become more and more deadly. C．The research in Ebola virus is more advanced than that in other viruses. D．The scientists have a negative attitude to the research in Ebola virus. 答案：B 推理判断题。根据文章第一段的They found that initially the animal systems were no ... ...
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