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
2024-01-16
32
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 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. 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, 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] What’s the mission of Polar Bears International?
选项
A、Saving energy.
B、Conducting scientific research.
C、Seeking international cooperation.
D、Saving polar bears and their home.
答案
D
解析
根据文章最后一段第二句“The group aims to save the bears and their home.”可知,这个组织的目标是拯救北极熊和它们赖以生存的家园。本题题干中出现的mission和原文中的aim是同义替换。故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3366310.html
相关试题推荐
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Itwasacoldwinterday.AwomandroveuptotheRainbowBridgetollbooth(
Itwasacoldwinterday.AwomandroveuptotheRainbowBridgetollbooth(
Itwasacoldwinterday.AwomandroveuptotheRainbowBridgetollbooth(
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Inwinterwego______onthehill.A、skiingB、toskiC、skiD、forskiA本题考查动词go的固定搭
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
随机试题
Ifthedisputeisnotsettledina(n)______waysoon,thetwocountrieswillce
[originaltext]QuestionNo.6Beingbilingualormultilingualcanbeanadvantag
Gmail(GoogleEmail)NoticeSubject:YourGmailaccounth
[originaltext]W:Here’smyInternationalDriver’sLicense,andhowmuchisasp
Whatpersonalqualitiesaredesirableinateacher?Probablynotwopeoplew
在体心立方晶胞中,体心原子的坐标是()。A.1/2,1/2,0 B.1/2,0
下列关于接地装置相关要求说法错误的是( )。A.足够的机械强度 B.连接可靠
若保持2021年同比增速不变,那么,2022年全国普通高校毕业生人数将比
甲县法院在审判秦某受贿案过程中,发现秦某已逃至乙县,遂决定逮捕秦某。关于该案程序
(2017年真题)抵押权设立后抵押财产出租的,该租赁关系不得对抗已登记的抵押权。
最新回复
(
0
)