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
4
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] The word "cubs" in the fourth paragraph is closest in meaning to______.
选项
A、adults
B、babies
C、hunters
D、enemies
答案
B
解析
词汇题。阅读理解中的词汇题考的永远不是词汇本身,而是联系上下文对文章的理解。因此找到包含考查词汇的句子后,要先通读整个句子。我们在这个句子中发现cubs之后出现their mothers,可以推断,cubs和mothers是相对应的,因此意思是“孩子”。故选B。
转载请注明原文地址:https://tihaiku.com/zcyy/3370641.html
相关试题推荐
Theelderlyneedspecialcareinwinter,astheyare______tothesuddenchangeo
Itwasacoldwinterday.AwomandroveuptotheRainbowBridgetollbooth(
Itwasacoldwinterday.AwomandroveuptotheRainbowBridgetollbooth(
Itwasacoldwinterday.AwomandroveuptotheRainbowBridgetollbooth(
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
Wemustmake________ourmindswheretogoforourvacationthiswinter.A、outB、u
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfalls
随机试题
To:AllstaffFrom:PersonnelDept.Date:December26th,2008Subject:Appointme
Recentstoriesinthenewspapersandmagazinessuggestthatteachingandres
[originaltext]Paul,asalesmanfromLondon,wasdrivingpastasportscarp
下列不是健康危险因素干预的类型的是()A.疾病的防治 B.膳食干预
根据《建设工程安全生产管理条例》的规定,工程监理单位在实施监理过程中,发现存在安
皆能活血通经,利水的药组是A.川芎、延胡索 B.桃仁、红花 C.益母草
(共用题干)患者男,53岁。因肝癌行半肝切除术后2小时,出现烦躁不安、面色苍白。
建设项目中具有独立设计文件,可以独立施工,但不能独立发挥生产能力或使用功能的工程
下列关于建设工程见证取样的说法,正确的是()。A.施工人员对工程涉及结构安全
在下列工程项目管理组织机构形式中,容易形成多头领导的是()。A.直线职能制和直
最新回复
(
0
)