Question

Starting in l972，the National Park Service established a policy for forest fires calle Natural Burn．It was acknowledged that some forest fires，such as those caused by lightning were necessary for forests to maintain balanced ecosystems，so the fire should be allowed to burn．However, a big fire in Yellowstone National Park in l988 caused this policy to be abandoned since the fire was initially allowed to burn yet soon out of control．As a result，the fire of l988 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 bumed 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 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．a(chǎn)pproved by National Park Service

2.The big fire in Yellowstone in 1988          ．

A．became out of control at first

B．destroyed the park completely

C．was allowed to burn continuously

D．brought the natural burn policy to an end

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．little streams

5.The text probably comes from    ．

A．a(chǎn) science fiction    B．a(chǎn) news report

C．a(chǎn) commercial ad    D．a(chǎn) geography magazine

 

Answer 1

【答案】

 

1.C

2.D

3.D

4.C

5.D

【解析】

試題分析: 從1972年以來國家公園管理局頒布了一項(xiàng)政策：對于由閃電引起的自然火災(zāi)采取放任態(tài)度，認(rèn)為這有助于自然平衡。但是1988年黃石自然公園的大火發(fā)生后，這項(xiàng)制度被廢除了，因?yàn)榛馂?zāi)會帶來巨大的損失。

1.C細(xì)節(jié)理解題。根據(jù)文章首段such as those caused by lightning were necessary for forests to maintain balanced ecosystems，可知在過去人們認(rèn)為自然火災(zāi)會對生態(tài)平衡有益，答案選C。

2.D細(xì)節(jié)理解題。根據(jù)第一段中However, a big fire in Yellowstone National Park in l988 caused this policy to be abandoned可知黃石火災(zāi)的發(fā)生結(jié)束了這一制度，故D選項(xiàng)正確。

3.D細(xì)節(jié)理解題。根據(jù)文章第二段中The fires were driven by high winds，moving as many as ten miles a day．Many small animals died in the flames．可以判斷因?yàn)榇箫L(fēng)助長了火勢，很多動物來不及逃走就被燒死了，所以選D。

4.C細(xì)節(jié)理解題。從文章第二段Yellowstone had previously been famous for its amazing views and unique geological formations such as the geyser Old Faithful.可知黃石公園因?yàn)樽匀伙L(fēng)光而聞名，答案選C。

5.本文介紹的是自然火災(zāi)對于森林的影響，屬于自然地理范疇，由此判斷文章應(yīng)選自地理雜志，所以答案選D。

考點(diǎn)：考查自然科學(xué)類短文閱讀。