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(单词翻译:双击或拖选)
ENVIRONMENT REPORT
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July 12, 2002: Elk1 Disease
By Mario Ritter
This is the VOA Special English ENVIRONMENT REPORT.
A mysterious disease is killing2 animals in one of America’s most popular natural areas. The animals are large
deer called elk.
Elk once lived in most areas of the United States. But hunters killed so many of them that they survived only in
the western states. Some elk have been brought back to other areas of the country. Wildlife officials recently
decided3 to re -establish elk populations in the eastern part of the country. In the past two years, they have brought
two groups of elk from Canada to an area in the state of North Carolina. The National Park Service released the
elk in the Great Smoky Mountains National Park.
Now, three of the elk have died mysteriously. Some biologists fear that the elk may
have died from chronic4 wasting disease. Biologists say there were no signs of
infection in the elk until they became weak and died. Some biologists say the
disease cannot be observed except in a dead animal.
It is not known if the disease can spread to cattle or other farm animals. However,
chronic wasting disease is linked with mad cow disease, or bovine5 spongiform
encephalopathy. Wildlife experts say the only way to stop the disease from
spreading is to kill thousands of elk.
The elk in North Carolina first came from a protected area in Alberta, Canada. A total of about fifty elk were
released into the Cataloochee area of the Great Smoky Mountains National Park. Everything seemed to be going
well until a park biologist found three dead female elk. Two of the animals were pregnant6. The animals appeared
to have been starved. The National Park Service reported the deaths in late April. Now, state biologists have
banned transporting elk into and out of the area.
Concern over diseases affecting wild animals like elk has increased recently in the United States. The state of
Wisconsin announced a plan to destroy fifteen-thousand deer. Officials in Wisconsin fear that some deer in the
state may carry chronic wasting disease.
The disease was first found in the western state of Colorado in the nineteen-sixties. Since then, it has been found
in deer and elk populations in several states.
Some national park biologists do not believe that chronic wasting disease killed the elk in North Carolina. They
hope that studies of the dead animals will soon show that they are right.
This VOA Special English ENVIRONMENT REPORT was written by Mario Ritter.
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![收听单词发音](/images/play.gif)
1
elk
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n.麋鹿 | |
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2
killing
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n.巨额利润;突然赚大钱,发大财 | |
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3
decided
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adj.决定了的,坚决的;明显的,明确的 | |
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4
chronic
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adj.(疾病)长期未愈的,慢性的;极坏的 | |
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bovine
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adj.牛的;n.牛 | |
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6
pregnant
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adj.怀孕的,怀胎的 | |
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