[单项选择]

H₅N₁ avian influenza, known commonly as bird flu, has killed at least 15 people across Asia and was confirmed in China on January 27. No human cases have been found in the mainland, but 13 of the country’s 31 provinces, autonomous regions, and municipalities (直辖市) have reported the disease in poultry.
The Chinese government has taken measures to prevent and control the disease. Poultry: within 3 km of infected farms is to be killed and those within 5 km vaccinated (进行接种设苗). Meanwhile, there will be constant monitoring and daily reports on the disease across the country, and increased production of bird flu vaccines.
Among the Asian countries and regions affected by bird flu in animals, only Vietnam and Thailand have reported human cases. The people infected were reported to have caught the disease from poultry. While the World Health Organization (WHO) said there is "no proof of human-to-human transmission (传播)" of bird
A. Poultry will infect many people.
B. The disease can spread quickly among people.
C. There will be human-to-human transmission.
D. A new disease combining bird and a human flu will break out.

[单项选择]

H₅N₁avian influenza, known commonly as bird flu, has killed at least 15 people across Asia
and was confirmed in China on January 27. No human cases have been found in the mainland, but 13 of the country’s 31 provinces, autonomous regions, and municipalities (直辖市) have reported the disease in poultry.
The Chinese government has taken measures to prevent and control the disease. Poultry within 3 km of infected farms is to be killed and those within 5 km vaccinated (进行接种疫苗). Mean- while, there will be constant monitoring and daily reports on the disease across the country, and in- creased production of bird flu vaccines.
Among the Asian countries and regions affected by bird flu in animals, only Vietnam and Thai- land have reported human cases. The people infected were reported to have caught the disease from poultry. While the World Health Organization (WHO) said there is "no proof of human-to-human transmission (传播)&q
A. Wild birds.
B. Wild animals.
C. Home-raised birds.
D. Home-raised animals.

[单项选择]

H₅N₁ avian influenza, known commonly as bird flu, has killed at least 15 people across Asia and was confirmed in China on January 27. No human cases have been found in the mainland, but 13 of the country’s 31 provinces, autonomous regions, and municipalities (直辖市) have reported the disease in poultry.
The Chinese government has taken measures to prevent and control the disease. Poultry: within 3 km of infected farms is to be killed and those within 5 km vaccinated (进行接种设苗). Meanwhile, there will be constant monitoring and daily reports on the disease across the country, and increased production of bird flu vaccines.
Among the Asian countries and regions affected by bird flu in animals, only Vietnam and Thailand have reported human cases. The people infected were reported to have caught the disease from poultry. While the World Health Organization (WHO) said there is "no proof of human-to-human transmission (传播)" of bird
A. Wild birds.
B. Wild animals.
C. Home-raised birds.
D. Home-raised animals.

[单项选择]H5N1 avian influence, known commonly as bird flu, has killed at least 15 people across Asia and was confirmed in China on January 27. No human cases have been found in the mainland, but 13 of the country’s 31 provinces, autonomous regions, and municipalities (直辖市) have reported the disease in poultry.
The Chinese government has taken measures to prevent and control the disease. Poultry within 3 km of infected farms is to be killed and those within 5 km to receive vaccines (疫苗). (84)Meanwhile , there will be constant monitoring and daily reports on the disease across the country, and increased production of bird flu vaccines.
Among the Asian countries and regions affected by bird flue in animals, only Vietnam and Thailand have reported human cases. The people infected were reported to have caught the disease from poultry, while the World Health Organization (WHO) said there is "no proof of human-to-human transmission(传播)" of bird flue.
(85)The big fear is that the dise
A. Wild birds
B. Wild animals
C. Home-raised birds
D. Home-raised animals

[填空题]If avian flu H5N1 gained the ability to move from person to person, it could cause a ______.

[填空题] Avian flu or H5N1 has infected more than a hundred people so far in at least ten countries. The virus in Asia is killing more than 50% of the humans infected. If this virus learns to (36) ______human to human and (37)______that level of killing humans, we’’d got a global (38)______. Under (39)______ microscope, flu viruses look like spiky creatures. H5N1 may seem unassuming in the lab, but be sure it has ability to cause a public health (40)______. In fact experts say that H5N1 (41)______ strain responsible for the 1918 Flu pandemic. That strain mutated to (42)______ between people and (43)______. killed as many as 15 million around the world. (44)____________. But scientists warn that H5N1 could change to become an explosive killer. (45)____________ Here’’s what I mean. Let’’s say that the chicken farmer has the regular flu which always spreads like a wild fire from person to person. Then he gets infected with H5N1 from one of his chickens. Now both viruses are in the cells wh