首页
登录
职称英语
Alaska is disappearing slowly but surely. Since the 1950s, it is estimated t
Alaska is disappearing slowly but surely. Since the 1950s, it is estimated t
游客
2024-08-20
19
管理
问题
Alaska is disappearing slowly but surely. Since the 1950s, it is estimated that as much as 15 percent of Alaska’s area has disappeared. But how can a whole state be disappearing?
One reason for Alaska’s gradual disappearance is the melting of its glaciers. According to one geologist at the US Geological Survey, about 98% of Alaska’s glaciers are either unmoving or diminishing. This diminishing seems mainly due to the increase in global temperatures. Since the 1960s, the average year—round temperature has increased by 5°F. Additionally, the average winter temperature has increased by 8°F. Presently, an estimated 24 cubic miles of ice is disappearing from Alaskan glaciers every year. It may be even more in the near future, as some scientists predict that the average world temperature could go up 2. 5 to 10 °F by the year 2100.
Another problem contributing to Alaska’s gradual disappearance is its melting permafrost. Much of the land in Alaska was permanently frozen, or frozen for most of the year. This maintained its stability. Now, the melting permafrost is causing a number of problems on land. Roads and utility poles are collapsing. Also, the hard permafrost, which originally prevented beaches from eroding during violent storms is now melting. Affected villages are forced to move somewhere else. For villages on small low islands, one terrible storm could wipe out the entire community.
Some scientists believe that human activity is linked to the global increase in weather temperature. Whether the rising temperatures are caused by human activity or natural changes, the fact remains that Alaska is warming. Sadly, this could be a preview of what will happen to the rest of the world in the next century.
Summary:
There is a big problem in Alaska. The【49】______are melting. Scientists【50】______that 15 percent of Alaska has already melted. They say this change is the result of【51】______in the Earth’s【52】______. The higher temperatures are【53】______several problems in Alaska. The ground that was【54】______before is now beginning to defrost. This could be a(n)【55】______of what will happen to the rest of the world in the next century. [br]
选项
答案
preview
解析
见全文最后一句话。
转载请注明原文地址:https://tihaiku.com/zcyy/3727510.html
相关试题推荐
Alaskaisdisappearingslowlybutsurely.Sincethe1950s,itisestimatedt
Alaskaisdisappearingslowlybutsurely.Sincethe1950s,itisestimatedt
Alaskaisdisappearingslowlybutsurely.Sincethe1950s,itisestimatedt
Alaskaisdisappearingslowlybutsurely.Sincethe1950s,itisestimatedt
Alaskaisdisappearingslowlybutsurely.Sincethe1950s,itisestimatedt
Whatreleasedanestimated8.7milliontonsoftheglobalwarminggas?[br][or
Whatreleasedanestimated8.7milliontonsoftheglobalwarminggas?[br][or
Alaskaisdisappearingslowlybutsurely.Sincethe1950s,itisestimatedt
Alaskaisdisappearingslowlybutsurely.Sincethe1950s,itisestimatedt
ThelargestandsmalleststatesoftheUnitedStatesare______.A、AlaskaandRho
随机试题
A、Localfolks.B、Professionaleditors.C、Communityactivists.D、Clubsandchurch
[img]2018m11s/ct_eyyjsaz2017c_eyyjsacloze_0016_201809[/img]Ahundredyears
[originaltext]Doyouhavetroublesleepingatnight?Thenmaybethisisfor
闭合性骨盆骨折可引起A.骨筋膜室综合征 B.肾挫伤 C.脂肪栓塞 D.出血
房地产目标市场采用单一市场模式确定,意味着()。A:企业向不同顾客同时供应某种
房地产开发主要程序分为( )。A.八个步骤、四个阶段 B.四个步骤、八个阶段
质量为m的物块A,置于与水平面成角θ的倾斜面B上,如图所示。AB之间的摩擦系数为
如果出现流动性危机,商业银行采取的下列措施正确的有()。A.同业拆入一笔款项
某国债对应的TF1509合约的转换因子为1.0167,该国债现货报价为99.64
根据《民事诉讼法》的规定,和解的适用包括()。A.执行前的和解 B.执行中的和
最新回复
(
0
)