(D)
Grizzly
bears, which may grow to about 2.5 m long and weigh over 400 kg, occupy a
conflicted corner of the American psyche-we revere (敬畏) them even as they give us
frightening dreams. Ask the tourists from around the world that flood into
Yellowstone National Park what they most hope to see, and their answer is often
the same: a grizzly bear.
“Grizzly bears are re-occupying large areas of
their former range,” says bear biologist Chris Servheen. As grizzly bears
expand their range into places where they haven’t been seen in a century or
more, they’re increasingly being sighted by humans.
The western
half of the U.S. was full of grizzlies when Europeans came, with a rough number
of 50,000 or more living alongside Native Americans. By the early 1970s, after
centuries of cruel and continuous hunting by settlers, 600 to 800 grizzlies
remained on a mere 2 percent of their former range in the Northern Rockies. In
1975, grizzlies were listed under the Endangered Species Act.
Today, there
are about 2,000 or more grizzly bears in the U.S. Their recovery has been so
successful that the U.S. Fish and Wildlife Service has twice attempted to
delist grizzlies, which would loosen legal protections and allow them to be
hunted. Both efforts were overturned due to lawsuits from conservation groups.
For now, grizzlies remain listed.
Obviously, if precautions (预防) aren’t taken, grizzlies
can become troublesome, sometimes killing farm animals or walking through yards
in search of food. If people remove food and attractants from their yards and
campsites, grizzlies will typically pass by without trouble. Putting electric
fencing around chicken houses and other farm animal quarters is also highly
effective at getting grizzlies away. “Our hope is to have a clean,
attractant-free place where bears can pass through without learning bad
habits,“ says James Jonkel, longtime biologist who manages bears in and around
Missoula.
12. How do Americans look at
grizzlies?
A. They cause mixed feelings
in people.
B. They should be kept in
national parks.
C. They are of high scientific
value.
D. They are a symbol of
American culture.
13. What has helped the
increase of the grizzly population?
A
The European settlers’ behavior.
B. The expansion of bears’ range.
C. The protection by law since
1975.
D. The support of Native Americans.
14. What has stopped the U. S. Fish and Wildlife Service from
delisting grizzlies?
A. The opposition of
conservation groups.
B. The successful comeback of
grizzlies.
C. The voice of the
biologists.
D. The local farmers’
advocates.
15. What can be inferred from
the last paragraph?
A. Food should be provided for
grizzlies.
B. People can live in harmony
with grizzlies.
C. A special path should be
built for grizzlies.
D. Technology can be
introduced to protect grizzlies.
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