题目内容
（请给出正确答案）
Influenza (travels) exactly as (fastly) as man. In oxcart days (its) progress was (slow).
A．travels
B．fastly
C．its
D．slow
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After some experiments, the doctors found that ______.
A. the influenza could be cured like other types of influenza
B. the influenza must be treated in a special way
C. the influenza did not have to be treated
D. the influenza could not be cured by any known medicine
According to the passage，a great variety of influenza strains can appear when______.
A. H and N spikes are produced
B. animal and bird viruses are combined
C. dissimilar types virus recombine
D. two viruses of the same type are contracted
W.H.O. reported the influenza because ______.
A. the doctor belonged to that organization
B. many people in Hong Kong also suffered from it
C. the doctor found its virus and sent the samples to them
D. it spread widely in Singapore for the first time
The school ______ because of the influenza (流行性感冒), the children had a week's holiday.
A．has closed
B．being closed
C．had closed
D．having been closed
Which of the following is true according to the passage？ ______.
A．This influenza can cause death if not treated immediately
B．The number of the influenza virus can grow very rapidly
C．The people who got the disease recovered soon
D．The London doctors didn't take the virus seriously at first
A. two influenza viruses in the same animal recombining
B. animal viruses recombining with human viruses
C. two animal viruses recombining in one animal
D. two animal viruses recombining in a human
What is known about the influenza virus？
A. It was first found in a group of very old birds.
B. All the different strains can be found in wild birds.
C. It existed over 100 million years ago.
D. It can survive in many different places.
Who reported the influenza because ______.
A．the doctor belonged to that organization
B．many people in Hong Kong also suffered from it
C．the doctor found its virus and sent the samples to WHO
D．it spread widely in Singapore for the first time
