首页
登录
职称英语
The top of the world is a wonderland. In winter, the temperature often falls
The top of the world is a wonderland. In winter, the temperature often falls
游客
2024-01-18
36
管理
问题
The top of the world is a wonderland. In winter, the temperature often falls to -30°F and the sun never rises. The ocean is surrounded by frozen ground. There are few people or trees, but to polar bears, the Arctic(北极)is home.
Polar bears have thick fur, big paws and other features that make them well prepared for life in their tough environment. In fact, they need the Arctic sea ice for survival. But climate change is causing larger and larger areas of summer sea ice to melt(融化). Experts say that if warming patterns continue, the Arctic could be free of summer sea ice by 2050. That may cause two-thirds of the word’ s 20,000 polar bears to be gone by then too.
Polar bears can’ t survive for long on land. Seals are their main source of food. The only place where polar bears can hunt seals is on the ice. Although these bears are strong swimmers, they are no match for lightning swift seals in the water. A polar bear has brilliantly clever strategies to overcome this disadvantage. In winter the bear waits motionless beside a seal’ s breathing hole, which is a narrow tunnel through the ice. Often many hours pass before the seal comes up for air and the bear kills it with a powerful blow of its paw. In summer, the polar bears that live on land eat very little and wait for the sea ice to return.
With the sea ice forming later in the year and melting earlier, polar bears do not have enough opportunity to hunt and eat. Less sea ice makes it harder for the bears to catch the seals. The bears must swim longer distances between ice packs(大片浮水), and they can’t always make it. The ice is also getting thinner. These conditions can cause polar-bear cubs to become separated from their mothers, who provide them with food.
Steven Amstrup is the chief scientist of Polar Bear International. The group aims to save the bears and their home. " The more people who see polar bears and understand their difficult situations, the better the chance we’ll alter our warming path in time to save them," he says. [br] According to the passage, which of the following statements is TRUE?
选项
A、Starving polar bears are increasingly coming into villages, where they may be killed either for food or safety.
B、Polar bears can spend their entire lives on land if the sea ice melts completely.
C、Two-thirds of the world’s polar bears may disappear by 2050 as global warming continues.
D、The growing distance between ice packs is not a problem for polar bears, because they are excellent swimmers.
答案
C
解析
事实细节题。A选项中提到北极熊因为饥饿而闯入村庄——coming into village,这个在原文中没有信息提到,所以排除。B选项中的spend their lives on land帮助我们定位到原文的第三段开头——polar bears can’t survive for long on land.与选项意思正好相反,所以排除。原文第二段最后一句That may cause two—thirds of the word’s 20,000 po—lar bears to be gone by then too.及前一句…the Arctic could be free of summer sea ice by2050与C选项信息一致。原文第四段第三句话The bears must swim longer distancesbetween ice packs(大片浮冰),and they can’t always make it.与D选项中not a problem意思相左,因此排除。故选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3372555.html
相关试题推荐
A、Itishotinsummerandcoldinwinter.B、Itisrainyandgenerallycoldally
A、Ourbodytemperaturerises.B、Ourmindgoesmad.C、Ourbloodpressuregoesup.
[originaltext]Onewinterdayin1891,aclassatatrainingschoolinMassa
[originaltext]Onewinterdayin1891,aclassatatrainingschoolinMassa
[originaltext]Onewinterdayin1891,aclassatatrainingschoolinMassa
[originaltext]Ifyoufeellikeyouhadonetoomanydrinksoverthewinter
InwintertheremaybeseveralfeetofsnowinotherpartsofEnglandbutthere
(Despite)thetimeof(theyear),thetemperaturewas(enoughhot)to(turnon)
Mostofusareusedtoseasons.Eachyear,springfollowswinter,whichfoll
Mostofusareusedtoseasons.Eachyear,springfollowswinter,whichfoll
随机试题
I’dratheryou______there.A、walkingB、towalkC、walkD、walkedDwouldrather后面跟从句
Thesentence"Museumisaslipperyword"inthefirstparagraphmeansthat_____
[originaltext]Welcometothemuseum.Beforewegoinside,I’dliketoremindyo
下列哪一项不属于按定额的编制程序和用途分类的方式()。A.施工定额 B.材料
100Base-FX采用的传输介质是()。A.双绞线 B.光纤 C.无线电波
患者,女性,66岁,诊断为风湿性心脏病,昨日夜间患者突然从睡梦中憋醒,坐在床边,
认识主体在反映中的创造性表现在( ) A.透过现象反映事物的本质和规律 B
商业银行在发放贷款时,通常会要求借款人提供第三方信用担保作为还款保证,这种做法属
(2015年)根据《生活垃圾焚烧污染控制标准》,在不影响污染物排放达标和焚烧炉正
以机修车间、金工车间、装配车间编制对象,测算出每100㎡建筑面积或每1000m3
最新回复
(
0
)