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 lighting 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 abandoned 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（噴泉）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

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2016屆江蘇揚(yáng)州中學(xué)高三上學(xué)期12月月考英語試卷（解析版） 題型：單項(xiàng)填空

（2014·黑龍江哈三中10月考）She may have missed the train, _______ she won’t arrive for another hour.

A. in which B. when

C. in which case D. in that case

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年甘肅天水第一中學(xué)高一上第二段考英語試卷（解析版） 題型：書面表達(dá)

隨著科技的進(jìn)步，多媒體已走進(jìn)很多學(xué)校的課堂。課間休息時，有些學(xué)校利用它來播放音樂。假如昨天你班就“課間是否要播放音樂”展開了討論。請你根據(jù)以下信息用英語寫一篇短文，陳述討論結(jié)果。

[寫作內(nèi)容]

1．討論的時間和討論的問題；

2．學(xué)生們的觀點(diǎn)：

大多數(shù)學(xué)生認(rèn)為：活躍氣氛，放松，帶來快樂，學(xué)習(xí)效率高。

部分學(xué)生認(rèn)為：時間短，沒效果；課間太吵，需要安靜。

3．達(dá)成的共識：最好播放柔和并適合于中學(xué)生的音樂。

參考詞匯：the class break, efficiency（效率）, relaxation（放松）, agreement（共識）...

[寫作要求] 句子結(jié)構(gòu)準(zhǔn)確，信息內(nèi)容完整，篇章結(jié)構(gòu)連貫：

查看答案和解析>>

科目：高中英語 來源：2014-2015學(xué)年陜西西安臨潼區(qū)華清中學(xué)高三一�？加⒄Z試卷（解析版） 題型：單項(xiàng)填空

But for those interruptions, the meeting _____ half an hour ago．

A．was finished B．would have finished

C．would finish D．had been finished

查看答案和解析>>

科目：高中英語 來源：2014-2015學(xué)年山西忻州第一中學(xué)高三上期中英語試卷（解析版） 題型：信息匹配

Tips for cooking on a Tight Schedule

From my experience, there are three main reasons why people don’t cook more often: ability, money and time, 1._Money is a topic I’ll save for another day．So today I want to give you some wisdom about how to make the most of the time you spend in the kitchen．Here are three tips for great cooking on a tight schedule:

1．Think ahead．The moments when I think cooking is a pain are when I‘m already hungry and there is nothing ready to eat．So think about of the coming week．When will you have time to cook? Do you have the right materials ready?_2.

2．Make your time worth it．When you do find time to cook a meal, make the most of it and save yourself time later on．Are you making one loaf of bread? 3. it takes around the same amount of time to make more of something．So save yourself the effort for a future meal．

3．4. This may surprise you, but one of the best tools for making cooking worth your time is experimentation．It gives you the chance to hit upon new ideas and recipes that can work well with your appetite and schedule．The more you learn and the more you try, the more ability you have to take control of your food and your schedule．

Hopefully that gives you a good start．5. and don’t let a busy schedule discourage you from making some great changes in the way you eat and live!

A． Try new things．

B． Ability is easily improved．

C． Make three or four instead．

D． Understand your food better．

E． Cooking is a burden for many people．

F． Let cooking and living simply be a joy rather than a burden．

G． A little time planning ahead can save a lot of work later on．

查看答案和解析>>

科目：高中英語 來源：2014-2015學(xué)年山東省高三第一次診斷性考試英語試卷（解析版） 題型：單項(xiàng)填空

— Do you mind my opening the window? It’s a bit hot in here．

— ______________，as a matter of fact．

A． Go ahead B． Yes，my pleasure

C． Yes，I do D． Come on

查看答案和解析>>

科目：高中英語 來源：2014-2015學(xué)年江蘇泰州姜堰高三上期中英語試卷（解析版） 題型：單項(xiàng)填空

In many cities of China, if an ambulance is_______ in a traffic jam, police will respond to the emergency.

A． held up B． held back

C． held down D． held out

查看答案和解析>>

科目：高中英語 來源：2014-2015學(xué)年貴州遵義航天高級中學(xué)高三上第四次模擬英語試卷（解析版） 題型：信息匹配

How can we all get more laughter into our lives? Here is what the experts suggest:

1._______．Nancy Alguire，a teacher in Clifton Park，N．Y．，was once painfully shy and had a hard time laughing．Then she married a circus clown (小丑)．“I became interested in the clowns,” she recalls “One day I put on a costume and paint my face．That afternoon my whole life changed．I learned to laugh and enjoy life in a way I had never done before．”2._______To this day，she still makes it a rule to be with people who enjoy life and laughing．

3._______It doesn’t take you too much time and can be easy．Collect favorite cartoons and jokes．Also，keep a paper for writing down humor you find in everyday life．“Good ideas come and go fast，you have to capture them quickly or they are gone,” says Virginia Tooper．

Laugh when you need it most．“4._______” says comedian Bill Cosby．“And once you find laughter，no matter how painful your situation might be，you can survive it,” he insists．

Gray Alan，a sociology professor at the University of Minnesota，claims that laughter is a skill we can all gain--because it comes naturally．5._______．Just remember: we are just here for a period，so get a few laughs．

A． You can soften the worst blows through humor．

B． Mix with people who laugh．

C． Practise the art of laughing．

D． Keep a laughter file．

E． He who laughs last laughs best．

F． But it’s also something that has to be developed．

G． People’s joy can affect those around them．

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年遼寧實(shí)驗(yàn)中學(xué)分校高一上10月月考英語試卷（解析版） 題型：完形填空

Two old beggars (乞丐) were sitting on a busy street corner of a big city．They watched ____ as a lot of people walked by without looking at them．Sometimes, a kind?hearted woman or a small child would ____ a few coins in the hats in front of them.

Today was not a ____ day for begging．The men were able to ____ enough for a big meal．As it was getting dark, they started to ____ their things.

Just as they were getting ready to leave, they ____ a man walking toward them．He was a ____ man — they could tell that from his fine clothes．The first beggar said to the second with ____, “He’s coming our way！” The man stopped, ____ into his pocket and took something out．What looked like a piece of hard ___, wrapped (包裹) in white paper, hit each of their waiting hats．The rich man turned and ____ his way.

“He could have easily left us a few ____ or a bill, but he laughed at us with a piece of rock candy,” said the first beggar．He looked at the offering ____．“There’s no way we can ____ this — we have no teeth.” With these words, he picked up the thing and threw it away．Then he collected his things and ____.

The second beggar wanted to do the same, ____ a second thought made him change his ____．“I haven’t had anything like this for ages,” he thought．“How ____ of that man to offer me something so sweet!” With that, he opened the white paper．To his ____, there was no hard rock candy inside．____, a shiny white pearl (珍珠) worth thousands of dollars fell into his hand.

1.A．helplessly B. happily C． uselessly D． quickly

2.A．steal B. lose C． drop D． send

3.A．cloudy B. bad C． rainy D． cold

4.A．collect B. pick C． buy D． find

5.A．carry B. hide C． place D． pack

6.A．felt B. heard C． noticed D． believed

7.A．kind B. strong C． tall D． rich

8.A．worry B. excitement C． fear D． politeness

9.A．turned B. looked C． went D． reached

10.A．candy B. cake C． rock D． bread

11.A．forgot B. changed C． missed D． continued

12.A．books B. coins C． sweets D． flowers

13.A．a(chǎn)ngrily B .proudly C． nervously D． quietly

14.A．smell B. eat C． like D． put

15.A．slept B. sat C． left D． cried

16.A．if B. although C． after D． but

17.A．habit B. way C． mind D． rule

18.A．nice B. funny C． clever D． strange

19.A．interest B. sadness C． surprise D． pity

20.A．Besides B .Instead C． However D． Again

查看答案和解析>>

同步練習(xí)冊答案