更多"H5N1 is a flu strain ______."的相关试题:
[单项选择]H5N1 is a flu strain ______.
A. limited to Hong Kong
B. which first affected human beings in 1961
C. crossing species barriers
D. which was first isolated from American birds
[单项选择]人流感病毒主要作用于鼻腔和咽喉的受体亚型阿尔法2.6，而H5N1病毒通常影响的是下呼吸道受体亚型阿尔法2.3。这一差异决定了禽流感病毒不太容易通过唾液飞沫传播。然而最新的基因测序后果却显示，土耳其禽流感病毒呈现更易与受体亚型阿尔法2.6结合的特征。 这段文字意在说明( )。
A. 不同病毒的鉴别技术
B. 禽流感病毒的传染性增强
C. 禽流感病毒如何作用于人体
D. 人流感病毒与禽流感病毒的区别
[单项选择]Where did the outbreak of bird flu start
A. From Chelyabinsk.
B. From Asia.
C. From Middle East.
D. From Europ
[单项选择]Comparing the time scales between many flu epidemics, scientists can ______ when another one might happen.
A. determine
B. anticipate
C. predict
D. assure
[单项选择]Those who get the flu vaccine are surely protected from the disease.
[单项选择]When was the deadly avian flu first discovered in humans in the world
A. 1997.
B. 1998.
C. 2003.
D. 2004.
[单项选择]Some officials believe bird flu spread to Africa mainly due to ______.
A. the trade of farm birds
B. the waste and liquids of infected birds
C. the fact that sortie people touched sick birds or any infected part of sick birds
D. the virus changed and started spreading in some new forms
[单项选择]The passage implies that the strain on freshwater aquifers caused by poor irrigation patterns may be reduced by all of the following methods EXCEPT
A. (A) Government compensation programs for surplus
B. (B) Climate study
C. (C) Soil management
D. (D) Drip irrigation
E. (E) Changes in patterns of food consumption
[单项选择]Flu shots are given every fall as a precaution against an epidemic the following winter.
A. required treatment
B. free service
C. preventive measures
D. new therapy
[单项选择]According to the passage, to combat the flu effectively, ______.
A. one should identify the virus which causes it
B. one should consult a doctor as soon as possible
C. one should take medicine upon catching the disease
D. one should remain alert when the disease is spreading
[单项选择]If children have flu-like symptoms, their parents ______.
A. are advised not to give them aspirin
B. should watch out for signs of Reye syndrome
C. are encouraged to take them to hospital for vaccination
D. should prevent them from mixing with people running a fever
