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
2024-01-17
28
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(大片浮冰), 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
细节题。从文章最后一段第二句这个组织的目标(aim)是拯救北极熊和它们赖以生存的家园。此题干中出现的mission和原文中的aim是同义转换。故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3370643.html
相关试题推荐
冬至(thewintersolstice)为每年公历12月22日左右。冬至是北半球(theNorthernHemisphere)全年中白天最短、
InwintertheremaybeseveralfeetofsnowinotherpartsofEnglandbutthere
(Despite)thetimeof(theyear),thetemperaturewas(enoughhot)to(turnon)
Mostofusareusedtoseasons.Eachyear,springfollowswinter,whichfoll
Mostofusareusedtoseasons.Eachyear,springfollowswinter,whichfoll
Mostofusareusedtoseasons.Eachyear,springfollowswinter,whichfoll
______Idon’tlikearethelong,darknightsofwinter.A、ThatB、WhatC、WhichD、
Whenthedoctor1tookmytemperature,itwasthreedegreeabove______.A、average
Itwasacoldwinterday.AwomandroveuptotheRainbowBridgetollbooth(
Itwasacoldwinterday.AwomandroveuptotheRainbowBridgetollbooth(
随机试题
______referstothereformmovementsintheUnitedStatesaimedatabolishingr
Thethreeworld’srichestindustrialcountriesare______.[br][originaltext]
A
目前混凝土强度与回弹值R一般通过以下几种方程确定他们之间关系()。A.直线方程
某混凝土试块强度值不满足规范要求,但经法定检测单位对混凝土实体强度经过法定检测后
慢性脓胸胸廓成形术病人术后应重点观察A.体温 B.呼吸 C.心率 D.血压
如今的厂商都为寻我新的商机而挖空心思,不想却在身后留下了一批“盲点”产业。有关专
在一起民事侵权案件中,当事人提起上诉时()。A.只能向第二审人民法院提出
下列关于ETF(交易所上市基金)的表述,不正确的是()。A.ETF与开放式
有关子宫腺肌病下述表达正确的是A、多数合并子宫内膜异位症 B、多发生在初产妇
最新回复
(
0
)