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1. 阅读理解
A rare virus infection has appeared in the
central United States, a team of doctors has just reported. The virus causes
fevers, a drop in the blood's infection-fighting white cells and a reduction in
the blood platelets(血小板). Up to now, there have been
eight confirmed cases. Seven men became very sick with the disease but
recovered. The eighth man died.
The disease was first noticed in June, 2009.
Two Missouri farmers came to the hospital. They reported headaches, nausea,
high fevers, and diarrhea (腹泻). And they were very, very
tired. Blood tests showed the men had low white-blood-cell counts. Both men
reported they had been recently bitten by ticks(蜱). The
first man said his wife removed a tick from his body the day before his fever
began. The second farmer had been "ticked" a lot. He told doctors he
had averaged 20 tick bites a day for almost two weeks. His last tick bite had
been about three days before his fever struck.
Ticks spread many diseases, so the doctors
tested for common ones. Their tests didn't turn up anything. Antibiotics(抗生素) failed to help. But that was not surprising as it turned out that
both men were infected with a virus.
Although doctors guessed the virus came from
the bite of an infected tick, they couldn't be sure. So Harry Savage of the
CDC(Centres for Disease Control and Prevention) and his colleagues hunted ticks
at 12 places, including the farms belonging to the first two Missouri patients.
In all, they collected 56,428 of the tiny animals. There were three different
species of ticks in their collection. But the result is still unknown. Get to
know more news, please click here.
（1）What effects does the rare virus infection have on people's health?
A . It causes an increase in blood platelets.
B . It causes people to die directly.
C . It causes a drop of all white cells.
D . It causes a higher body temperature.
（2）What can we learn about "ticks"?
A . Their bites are harmless.
B . They prefer to bite farmers.
C . Their bites might lead to terrible stomach aches.
D . They might have something to do with the virus.
（3）Where can we properly find the article?
A . A website.
B . A science report.
C . A textbook.
D . A popular magazine.
（4）What can be a suitable title for the text?
A . Ticks can spread disease
B . An unknown disease appears
C . Hunting ticks for experiments
D . Fighting against virus infections
