Question

A

Starting in 1972，the National Park Service established a policy for forest fires called Natural Burn．It was acknowledged that some forest fires，such as those which were caused by lighthing were necessary for forests to maintain(保持)balanced ecosystems，so the fire should be allowed to burn．However， a big fire in Yellowstone National Park in 1988 caused this policy to be abandbned since the fire was initially（最初）allowed to burn yet soon out of contro1．As a result，the fire of 1988 destroyed much of Yellowstone，which is America’s oldest and most beloved national park．Massive areas of plants were destroyed，and large empty spaces and acres of burned and blackened trees greeted visitors．The rivers and streams were choked with ash，and the ecosystem of the park was changed beyond repair．

In addition，great numbers of animals were killed by the fires that burned out of control. The fires were driven by high winds，moving as many as ten miles a day．Many small animals died in the flames．The fires’rapid advances gave the wildlife little chance to escape．Even today，few of these small forest animals have returned to live in the park. In the years immediately following the fires，the numbers of visitors declined. rapidly．No one was interested in seeing a blackened and treeless park on vacation．Yellowstone had previously been famous for its amazing views and unique geological formations such as the geyser(喷泉) Old Faithful．But now its reputation as America's wonder is damaged permanently．

1.Natural Burn was adopted because some forest fires were ______________

A. hard to put out

B．started by lightning

C. good for the balance of nature

D．approved by National Park Service

2.The big fire in Yellowstone in 1988 _______________．

A．became out of control at first

B．brought the natural burn policy to an end

C．was allowed to burn continuously

D．destroyed the park completely

3.Why were so many animals killed in the big fire?

A． Because winds were blown from high places．

B． Because the animals moved only ten miles a day．

C． Because the animals lived in lower places．

D.  Because strong winds contributed to the fire a lot．

4.Yellowstone was famous for its ______________．

A．rare animals

B．unique plants

C．beautiful scenery

D．1ittle streams

5.The text probably comes from _____________．

A．a geography magazine

B．a news report

C．a commercial ad

D．a science fiction 

Answer

1.C

2.D

3.B

4.C

5.A

【解析】

1.细节题，根据文章第一段的It was acknowledged that some forest fires，such as those which were caused by lighthing were necessary for forests to maintain(保持)balanced cosystems可知是为了自然生态平衡而建，故选C。

2.细节题。根据第一段的the fire of 1988 destroyed much of Yellowstone可知1988年的大火完全毁掉了公园。故选D。

3.细节题。根据 文章第二段的The fires were driven by high winds，moving as many as ten miles a day可知大风让火势更猛，导致动物们躲闪不及，以致死亡。故选B。

4.细节题。根据文章第二段的Yellowstone had previously been famous for its amazing views and unique geological formations such as the geyser(喷泉) Old Faithful可知Yellowstone是以美丽的风景而闻名的，故选C。

5.推测题。通读全文，文章主要围绕1988年的大火导致了Yellowstone公园的毁灭，和为保护生态平衡而采取的措施，故应是从一份地理杂志上摘取而来的。