更多"The Asian Flu Virus
In 1957, a"的相关试题:
[单项选择] The Asian Flu Virus
In 1957, a doctor in Singapore noticed that hospitals were treating an unusual number of influenza-like cases. Influenza is sometimes called "flu" or as "bad cold". He took specimens from the throats of patients in his hospital and was able to find the virus of this influenza.
There are three main types of the influenza virus. The most important of these are types A and B, each of them having several sub-groups. With the instruments at the hospital the doctor recognized that the outbreak was due to a virus group A, but he did not know the sub-group. He reported the outbreak to the World Health Organization in Geneva. W. H. 0. published the important news alongside reports of a similar outbreak in Hong Kong, where about 15%-20% of the population had become ill.
As soon as the London doctors received the package of throat samples, they began the standard tests. They found that by reproducing itself at a very high speed, th
A. was a killer
B. was very weak
C. could reproduce very quickly
D. died very fast
[填空题]The virus of flu is well adapted to immune systems of water birds, and does not usually make them very sick.
[单项选择]Unfortunately, the new swine flu virus can be transmitted between humans. It is not clear yet how easily it is transmitted, nor how it is transmitted. Almost surely it is transmitted by sneezing and coughing, and by skin-to-skin contact with an infected person.
How is the swine flu virus transmitted according to the passage
A. It is very easily transmitted from person to person.
B. It is not quite sure how it is transmitted yet.
C. It is surely transmitted by sneezing or coughing.
D. It is surely transmitted by skin-to-skin contact.
[单项选择]—The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job
—（）my students have a try
A. Shall
B. Will
C. Could
D. Should
[填空题]
Computer Virus and Virus Scan
A computer virus is a software program that attaches itself to another program in computer memory or on a disk, and spreads from one program to another. Viruses can damage data, cause computers to crash, display offending or bothersome messages, or lie dormant (保持静止的状态) until such time they are set to "awaken". In today’s industry, scanning is no longer considered to be an extravagance--but a necessity. Computer viruses no longer attack your computing environment only but all other computing environments which you contact. Computer viruses can attach themselves to the files being used and later propagate (复制) themselves through disks and files. Important information and hardware losses could plague (瘟疫，烦扰) your computing environment should you not take the proper precautions.
Many anti-virus products, such as Virus Scan, hold up the list of proper precautions. Scheduled periodic scans of your computing environme
