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
Look at an atlas. How are mountains shown? Where are the highest mountains? A few mountains stand alone, such as Mount Egmont in
Look at an atlas. How are mountains shown? Where are the highest mountains? A few mountains stand alone, such as Mount Egmont in
admin
2019-03-27
54
问题
Look at an atlas. How are mountains shown? Where are the highest mountains? A few mountains stand alone, such as Mount Egmont in New Zealand, and Mount Kenya in Africa. Most mountains are found in long chains called mountain ranges. The Pennines, the Cambrian Mountains, the Alps, the Andes and Rockies are examples of mountain ranges. The highest mountain range on the Earth is the Himalayas in Asia.
In order to understand how mountains are formed, we need to know what the inside of the Earth is like. The Earth is made up of layers of rock. The outside layer of rock, the one we live on, is called the Earth’s crust. Beneath the crust is a layer called the mantle. Near the top of the mantle, some of the rocks have melted and are a liquid, like sticky tar. Because all the rocks around it press on the mantle, the molten rock tries to force its way out. If the molten rock does find a weak spot, it bursts through the Earth’s crust, forming a volcano. Some mountains were made by volcanoes.
The Earth’s crust is made up of large pieces, called plates, which fit together like the pieces of a jigsaw puzzle. Some of the plates carry continents, others carry oceans. The plates move slowly, floating on the molten rocks of the mantle below. As the plates move, they push against each other, slowly pushing up the rocks in folds to form mountains.
India used to be a long way from Asia, but gradually the plate with India on it moved closer to the plate bearing Asia. The rocks in the sea between India and Asia were pushed up in folds that now form the Himalayan mountain range. That is why it is sometimes possible to find seashells near the tops of the Himalayas. Many other mountain ranges, including the Alps, Rockies and Pen-nines , are similar great folds of rock.
While some plates are pushing together, others are moving further apart. Europe and North America are slowly moving further apart. Each year the Atlantic Ocean is a few centimetres wider. As the rocks move, they often crack or break. These breaks are called faults. Sometimes, great blocks of rocks are pushed up between two faults. These blocks may be so large and high that they form mountains. Some of the highland areas of East Africa are block mountains, so are the Vosges mountains in France and the Sierra Nevada mountains in the western United States. Block mountains often have flat tops. A flat-topped highland is called a plateau.
Questions 56—60
Complete the following form with no more than three words according to the passage.
选项
答案
in folds
解析
(根据第四段第二句“The rocks in the sea between India and Asia were pushed up in folds that now form the Himalayan mountain range.”可知答案为in folds。)
转载请注明原文地址:https://kaotiyun.com/show/q0NK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
Changesinthewaypeoplelivebringaboutchangesinthejobsthattheydo.Moreandmorepeopleliveintownsandcitiesinste
Afewyearsago,peopleinEnglandvotedforthegreatestpersonofalltimefromtheircountry.Theywerenotjustvotingfort
IntheUnitedStatestoday,manypeoplewantacollegeeducation.However,almosthalfofthepeoplewhogotocollegenowdono
IntheUnitedStatestoday,manypeoplewantacollegeeducation.However,almosthalfofthepeoplewhogotocollegenowdono
IntheUnitedStatestoday,manypeoplewantacollegeeducation.However,almosthalfofthepeoplewhogotocollegenowdono
Whatarepeopleadvisedtodotofightseasonaldepression?
Whatarepeopleadvisedtodotofightseasonaldepression?
JoeSimpsonandSimonYateswerethefirstpeopletoclimbtheWestFaceoftheSiulaGrandeintheAndesMountains.Theyreache
JoeSimpsonandSimonYateswerethefirstpeopletoclimbtheWestFaceoftheSiulaGrandeintheAndesMountains.Theyreache
Thechartsbelowshowtheresultsofasurveyofadulteducation.Thefirstchartshowsthereasonswhyadultsdecidetostudy.
随机试题
完全网络营销的交易过程不包括网上客户服务。
信用条件是指公司要求顾客支付赊销款项的条件,其中不包括【】
女性,42岁。半年前因突发呕新鲜血1800ml住院治疗,并确诊为门静脉高压症,经保守治疗好转后出院。本次又因大量呕血住院,经三腔二囊管压迫止血等综合治疗6天后,出血停止24小时,拔除三腔二囊管后,再次发生大出血。对该患者首先要警惕可能并发
下述哪项与原发性肝癌发病关系最密切
赵先生,行胆总管切开取石、T管引流术。术后第3天,护士查房时发现T管无胆汁流出,病人诉腹部胀痛。首先应
室内有两个噪声源,同时工作时总声压级为73DB,当其中一个声源停止工作时,测得室内声压级为72DB,另一声源的声压级是()DB。
按照施工合同通用条款的规定,当合同文件出现矛盾时,可( )。
将一枚硬币独立地掷两次,引进事件:A1={掷第一次出现正面},A2={掷第二次出现正面},A3={正、反面各出现一次},A4={正面出现两次},则
阅读以下关于应用系统数据架构的说明,在答题纸上回答问题1至问题3。【说明】某软件公司拟开发一套贸易综合管理系统,包括客户关系管理子系统和商品信息管理子系统两部分。客户关系管理子系统主要管理客户信息,并根据贸易业务需要频繁向客户发送相关的
Listentothefollowingpassage.WriteinEnglishashortsummaryof150-200wordsofwhatyouhaveheardontheANSWERSHEET.Y
最新回复
(
0
)