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
Volcanoes There are thousands of volcanoes (火山) all over the world. What makes volcanoes? What happens? The inside of the earth
Volcanoes There are thousands of volcanoes (火山) all over the world. What makes volcanoes? What happens? The inside of the earth
admin
2009-06-15
87
问题
Volcanoes
There are thousands of volcanoes (火山) all over the world. What makes volcanoes? What happens?
The inside of the earth is very hot. Because it is very, very hot, the rock has melted like ice. It has become liquid, like. water. It is always boiling, like water in a kettle. If you have seen a kettle boiling, you know that the steam and boiling water try to get out. The very hot melted rock inside the earth also tries to get out. Usually it cannot because the outside of the earth is too thick and strong.
But in some places the outside of the earth is thin and weak. Sometimes a crack appears. The hot melted rock, which we call "lava" (熔岩), pushes out through the crack and bursts through. Steam and gas shoot up into the air and the hot melted lava pours out. Big pieces of rock may be thrown high into the air.
After a while the volcano becomes quiet again. The melted lava becomes hard. Later the same thing happens again and again Each time more hot lava pours out on top of the cold lava and then becomes hard. In this way a kind of mountain is built up, with a hole down the middle. Perhaps the volcano will then be quiet. Perhaps it will start again hundreds of years later.
Vesuvius is the name of a very famous volcano in Italy). It first came to life many, many years ago. It was quiet for hundreds of years. Then in the year 79 it suddenly burst. A great cloud of smoke shot up into the sky with great burning rocks. Hot lava poured down its sides. About 3,000 people were killed.
This has happened again many times since that year. Sometimes no damage was caused, or only little damage. But there was serious damage in the years 472, 1631, 1794, 1861, 1872 and 1906. You can see that a volcano can stay alive for many years. There was also serious damage in 1914 but" there has not been any since that year.
选项
A、boiling water.
B、boiled water.
C、melted rock.
D、melted ice.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/A8Fd777K
本试题收录于:
职称英语综合类B级题库职称英语分类
0
职称英语综合类B级
职称英语
相关试题推荐
CloneFarmFactoryfarmingcouldsoonenteraneweraofmassproduction.CompaniesintheUSaredevelopingthetechnology
AtheenergytoturnaturbineBimpermeablerockConeortwoseparatorsDturbineoperatorElittleornowaterFhotsprings
A.GoodresultsB.AnancientskillC.GainingattentionD.MemorytricksE.AlectureonmemorytechniquesF.Waystoimpr
TheauthorhadtroubleoperatinghisVCRbecauseAccordingtothepassage,beforegVCRissoldonthemarket,itsoriginalmod
A.YouShouldEnsureThatYouHaveAsMuchMemory(RAM)inYourPCAsYouNeedB.DoPrepareforDisasterC.KeepingaPCRunnin
ThetemperatureatthecenteroftheSunismuchhigherthanitisatthesurface.TheSun’satmosphereonlyexistsinthefirs
WhatdoyousupposewastheattitudeofDr.SamuelJohnsontowardsladiespreaching?Intermsofmakingdecisions,thehumanbr
Ford1.Ford’sgreatstrengthwasthemanufacturingprocess--notinvention.Longbeforehestartedacarcompany,hewasa
EveryDogHasItsSayKimikoFukuda,aJapanesegirl,alwayswonderedwhatherdogwastryingtosay.Wheneversheputo
TheNationalParkServiceAmerica’snationalparksarelikeoldfriends.Youmaynotseethemforyearsatatime,butjustknow
随机试题
A.卵磷脂B.甘油三酯C.两者都是D.两者均否合成时以磷脂酸为中间物的是
A.Ic期B.Ⅱb期C.Ⅱc期D.Ⅲb期E.Ⅲc期一侧卵巢肿瘤,伴有髂总淋巴结转移,其分期为
流行病学研究对象的三个层次包括
编辑区默认位于工具栏的下方,由名称框、取消输入按钮、确认输入按钮、插入函数按钮和编辑栏构成,用来显示当前单元格的名字和当前单元格的内容,取消或确认本次输入的数据或公式。()
会计档案保管期限从( )后第一天算起。
下列许可证什中实行“一批一证”制度的有()。
在企业的财务管理目标的各种表达中,被大家公认的是( )。
简述GPS信号接收机的任务
×××××××济宁市人民政府:2013年10月18日,国务院以_____文批复我省,同意对济宁市部分行政区划进行调整。为做好有关工作,现通知如下:一、撤销济宁市市中区、任城区,设立新的济宁市任城区,以原市中区、任城区的行政区域为新
WhichtypeofWANtunnelingprotocolismissingfromthetablethatfollows?
最新回复
(
0
)