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Swine Flu Outbreak

1 From its name, swine influenza is a viral disease transmitted among pigs. This is a respiratory disease that circulates within pig populations, but certain outbreaks occur on cold season, on winter and fall, just like how ordinary flu affects human beings.

2 Swine flu infects human beings and over two thousand cases of affected individuals confirm that swine flu is indeed something to be taken seriously. Normally, swine flu is not transmitted to humans. But within the bodies of swine, a process called the antigenic shift make swine flu a very contagious disease not only among pigs but also among us, people. Pigs are not only carriers of ordinary swine flu viruses, they are also carriers of other animals’ viruses- such as of birds and of human beings. This ordinary human flu can turn into a human-infecting swine flu once combined with other flu viruses. As different types of viruses are being carried by pigs, viruses may reassort and swap genes with each other to develop a new strain of flu virus. This evolved virus is now being responsible for the present swine flu epidemic.

3 Swine flue affects people like the ordinary flu such as sore throat, cough, nasal congestion, fever, headache, chills body aches, and fatigue. Some patients also reported diarrhea and vomiting as symptoms. Although swine flu is curable with some drugs, about 150 deaths that were caused by swine flu have been reported.

4 To prevent swine flu, people should take personal health precautions such as cleaning one’s hands and other hygienic practices. Since swine flu appears to be just like an ordinary flu, it would be wise for people, whether they think they have swine flu or not, to cough and sneeze on tissue papers and properly dispose them on trash cans. People should also refrain from touching their lips, eyes and nose unless their hands are really clean. Swine flu is not transmitted by eating pork since swine flue viruses are killed in meat-cooking temperature. However, one should still be careful when eating or drinking. It would be safe to make sure that one’s food is safe from germs.

23.Paragraph 1

24.Paragraph 2

25.Paragraph 3

26.Paragraph 4

A.The definition of swine flu

B. The disease is incurable

C. The way the disease is transmitted to people

D. The disease has caused much deaths

E. Things we should do protect ourselves

F. The symptoms and influence of swine flu

正确答案:ACFE

解析:23.第一段介绍了猪流感的概念——一种在猪之间传播的病毒性疾病。

24.第二段主要讲述了病毒是怎样在猪体内从不能传染到人类变化成为可以传染到人类的病毒，并在人类之间传播。

25.第三段主要讲述猪流感的症状和影响。

26.第四段采取怎样的自我保护措施。

27.Pigs not only carry swine flu viruses, they also

28.Viruses inside pigs may exchange genes to

29.To prevent swine flu, people should

30.Cooked pork will

A.form hygienic and healthy habits

B. develop a new strain of flu virus

C. still help transmit swine flu viruses

D. carry other animals’ viruses

E. become an antiviral medicine

F. not help transmit swine flu viruses

正确答案:DBAF

解析:27.问题问的是：猪除了携带猪流感病毒，还携带什么病毒？第二段中间提到猪不但携带猪流感病毒，还携带其它动物病毒——如禽类和人类。

28.问题问的是：猪体内的病毒通过交换基因达到什么目的？第二段最后提到不同种类的病毒重新分类，与其它病毒交换基因，从而形成一种新的流感病毒株。

29.问题问的是：怎样做才能预防猪流感？第四段第一句提到人们应该养成良好的卫生习惯来预防流感。

30.问题问的是：做熟的猪肉会怎么样？最后一段提到猪肉经过烹饪后，就不能传播病毒了。

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