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
Death comes quickly in the mountains. Each winter holiday makers are caught unawares as they happily ski away from the fixed run
Death comes quickly in the mountains. Each winter holiday makers are caught unawares as they happily ski away from the fixed run
admin
2011-02-26
58
问题
Death comes quickly in the mountains. Each winter holiday makers are caught unawares as they happily ski away from the fixed runs, little realizing that a small avalanche can send them crashing in a bone-breaking fall down the slope and leave them buried under tons of crisp white snow. There are lots of theories about how to avoid disaster when hit by an avalanche. Practice is normally less cheerful.
The snow in the Salzburg of Austria where a recent disaster took place was typical avalanche material: For several days before the incident I had skied locally. Early winter snow was wearing thin and covered with ice. On top of that new, warmer flakes were gently falling to produce a dangerous carpet. To the skier who enjoys unmarked slopes it is tempting stuff, deep new power snow on a hard base--the skiing that dreams are made of And sometimes nightmares.
Snow falls in sections like a cake. Different sections have different densities because of the temperatures at the time of the fall and in the weeks afterwards. Problems come when any particular section is too thick and not sticking to the section beneath. The snow of the past few weeks had been falling in rather higher temperatures than those of December and early January. The result of these conditions is that even a slight increase in the temperatures sends a thin stream of water between the new snow and the old. Then the new snow simply slides off the mountain.
Such slides are not unexpected. Local citizens know the slopes which tend to avalanche and the weather in which such slides are likely. Traps are set to catch the snow or prevent it slipping; bombs are placed and exploded from time to time to set off small avalanches before a big one has time to build up; and above all, skiers are warned not to ski in danger areas.
In spite of this, avalanches happen in unexpected areas and, of course, skiers ignore the warnings. The one comfort to recreational skiers, however, is that avalanche incidents on the marked ski slopes are quite rare. No ski resort wants the image of being a death trap.
It would appear from the text that avalanches are brought about because ______.
选项
A、a particular section of snow is not thick enough
B、there is a slight fall in the temperature
C、heavy snowfalls turn into rain
D、the ice between different sections of snow melts
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/bkBO777K
0
考博英语
相关试题推荐
●ReadtheinformationaboutLondonTransportAgents.●Choosethecorrectwordtofilleachgap.●Foreachquestion29-40,mar
•Lookatthechartbelow.Itshowstheaveragesharepricesofeachmonthofthreecompaniesduringaneight-monthperiod.•
Wearecurrentlyrecruitingtelesalesstaff.Experiencedapplicantsshouldsubmitanup-to-dateCVandcontactdetailstoPersonn
HEALTHSURE-foryouandyourfamilyManyhealthinsurancepoliciesonlycoverthepaymentsyouhavetomakewhenyougoint
•Readtheadvertisementbelowforasolution.•Aresentences16-22ontheoppositepage’Right’or’Wrong’?Ifthereisnot
Readthenewspaperarticlebelowaboutapartnershipbetweenindustryandschools.Aresentences16-22belowthearticle"Right"
A、Ofthesalesdollar,morethan8%goestoAdministration.B、TaxesandSellingExpensemakeup26%.C、ComparedwithProfit,les
NoticetoallStaffConfirmyoursummerholidaydateswithyourdepartmentsupervisorbeforeenteringthemontheHolidayList.
Lookatthechartbelow.Itshowsamanufacturingcompany’sexpenditureonrecruitmentandtraining,anditsproductionlevelso
Computersmayonedayturnnightintoday—withgoodold,naturalsunlight.Giantcomputer-controlledmirrors,thousandsoff
随机试题
患者,男,65岁。因受凉COPD急性发作,入院后给予抗感染、平喘、祛痰治疗,输液总量是800ml,计划5小时输完,每分钟滴数为
班主任组织和培养班集体应做好哪些工作?
Itis【B1】truethatallofusneedtosleep,butmostpeople【B2】knowwhyandhowtheysleep.Weknowthatifwesleepwel
药物中重金属杂质是指
处方书写中,缩写词“bid.”表示
背景资料:A机电安装工程公司承包了一座中外合资乳品厂的机电安装工程,主要设备及工艺管道全部进口,对于部分工艺管线的材质,A公司没有接触过。其中的喷粉塔高40m,最上部的塔节重20t,需要整体吊装。项目部根据吊装方案,决定采用汽车吊。外方专家要求:工艺管
在浇筑竖向结构混凝土前,应先在底部填与混凝土内砂浆成分相同的水泥砂浆,其厚度应为()mm。
已知某挖土机挖土的一个工作循环需5分钟,每循环一次挖土0.5m3,工作班的延续时间为10小时,时间利用系数K=0.7,则其产量定额为()m3/台班。
以下程序的输出结果是()。ss=set(”htslbbt”)sorted(ss)foriinss:print(i,end=’’)
WiththeadventoftheInternet,informationcanbespreadwithunprecedentedspeedandhenceitislikelythatpeoplecanmake
最新回复
(
0
)