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
2025-03-04
9
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
事实细节题。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/3981885.html
相关试题推荐
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Itwasacoldwinterday.AwomandroveuptotheRainbowBridgetollbooth(
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
随机试题
光纤通信技术是指利用光波作为信息载体,以光纤作为传输媒介将信息从一处传至另一处的
通用标准一般规定各岗位人员遵守国家的法律法规和企业的规章制度的行为准则。
A.后代肥胖发生率是51%~60% B.后代肥胖发生率是70%~80% C.
“星烁征”可见于A、急性化脓性中耳炎 B、慢性化脓性中耳炎 C、耳硬化症
下列对脂水分配系数的描述正确的是A.以pKa表示B.药物脂水分配系数越大,活性越
两组蓄电池的变电站直流母线应采用()运行的方式,并在两段直流母线之间设置联络
2014年5月22日,习近平在上海召开的外国专家座谈会上指出,“要实行更加开放的
国家采用法律形式规定的适龄儿童、少年都必须接受的,国家、社会、学校、家庭都必须给
下列费用中,计入技术服务费中勘察设计费的是(),A.设计评审费 B.技术经
提高价值的途径中,()是一种灵活的企业经营策略,去除一些用户不需要的功能,从而
最新回复
(
0
)