题目内容
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.”
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.
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.
3.The underlined word “fatal” has the closest meaning to ______.
A. optimistic B. deadly
C. common D. fantastic
4.Where can we probably read this passage?
A. In a science report. B. In a storybook.
C. In an advertisement. D. In a textbook.
我校校报Superview需要一些介绍中国著名省市的稿件。请根据以下提示,用英语写一篇介绍云南省的短文,并投稿。
地名 | 云南省(南部美丽的云彩) |
位置 | 最云南的省份 |
面积 | 393,000平方公里 |
民族 | 拥有25个少数民族 |
地理特征 | 拥有高山,湖泊和热带雨林 |
稀有动物 | 被誉为“动物王国”,有金丝猴,亚洲象等 |
植物 | “世界花园”,拥有世界上一半的植物物种 |
自然奇观 | 石林、虎跳峡等 |
要求:1.可适当填加细节,以使行文连贯;
2.词数100词左右。
参考词汇:石林Stone Forest 虎跳峡Tiger Leaping Gorge 物种species
热带雨林rainforest 少数民族ethnic minority
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