首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Alaska is disappearing slowly but surely. Since the 1950s, it is estimated that as much as 15 percent of Alaska’s area has disap
Alaska is disappearing slowly but surely. Since the 1950s, it is estimated that as much as 15 percent of Alaska’s area has disap
admin
2019-08-04
22
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.
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://kaotiyun.com/show/vqjK777K
本试题收录于:
D类竞赛(专科)题库大学生英语竞赛(NECCS)分类
0
D类竞赛(专科)
大学生英语竞赛(NECCS)
相关试题推荐
A.decreasingB.underlinesC.deliveredD.missionsE.becauseF.putoffG.demand
A.differentlyB.ensuresC.unusualD.prohibitE.fairlyF.InreturnG.resulted
A.afterB.stormC.entitledD.illegalE.exaggerateF.beforeG.thunderH.interp
A.annoyingB.counterpartsC.becauseD.movingE.inheritedF.narrowedG.debated
A.primeB.addedC.byD.reproductiveE.excessiveF.takeG.extendsH.produc
(1)Patientsanddoctorshavelongunderstoodthepoweroftellingandlisteningtopersonalnarratives.Whetheramongpatientsi
(1)The35-year-oldBeijingwomaniswatchinganadshowingagianttelevisionmadebytheChinesecompanyHaier.Astreamofint
Twentyyearsago,atallyoungwomanwithashysmileflubbedherlinesbeforemillionsofpeopleandbecameasuperstar.OnJul
Twentyyearsago,atallyoungwomanwithashysmileflubbedherlinesbeforemillionsofpeopleandbecameasuperstar.OnJul
Intheearly1800’s,over80percentoftheUnitedStateslaborforcewasengagedinagriculture.Machineryand【C1】________tech
随机试题
患者,女,28岁。3个月来乏力,1周来发热伴皮肤紫癜和口腔颊黏膜血疱,浅表淋巴结及肝脾均不大,胸骨无压痛。化验:Hb65g/L,RBC2.2×1012/L,Ret0.002,WBC2.4×109/L,分类:N0.24,L0.7,M0.06,P
所谓有效循环血量是指()
女性,33岁。阵发性一侧头痛20年,左右不定,伴呕吐,每次疼痛持续6~10小时,常于月经期发作。头痛发作前,眼前有暗点,亮光,持续10分钟左右。神经系统检查未见异常。可能诊断为
郁证的发生虽与五脏均有关,但主要受累之脏为()
()对机会或问题的条件进行内外环境的搜索或调查。
设a,b是满足ab<0的实数,则下列选项正确的一个是()
在社会主义市场经济中,国有企业应发挥重要作用的行业和领域主要有()。
如图所示,BC=6,AC=8,两个等圆外切,A、B分别为两圆的圆心,则图中阴影部分的面积为:
Virtuallyunknownadecadeago,bigonlineteachereducationprogramsnowdwarftheirtraditionalcompetitors,outstripping(超过)
MyfavoriteT.V.show?"TheTwilightZone."I【B1】______liketheepisodecalled"ThePrinter’sDevil."It’saboutanewspapered
最新回复
(
0
)