2018秋高中英语 Unit 5 The power of nature同步练习 新人教版选修6

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1、Unit5Thepowerofnature话题诵读日积月累[导语]　火山在地球上喷发已有数百万年了，其中五百多座火山还在喷发着，这也显示了地球本身的力量。是什么导致了火山？到底发生了什么事？那火山带指的是什么？让我们来了解一下吧。Therearethousandsofvolcanoesallovertheworld.Whatmakesvolcanoes？Whathappens?Theinsideoftheearthisveryhot.Becauseitisvery，veryhot，therockh

2、asmeltedlikeice.Ithasbeeliquid，likewater.Itisalwaysboiling，likewaterinakettle.Ifyouhaveseenakettleboiling，youknowthatthesteamandboilingwatertrytogetout.Theveryhotmeltedrockinsidetheearthalsotriestogetout.Usuallyitcannotbecausetheoutsideoftheearthistoo

3、thickandstrong.Butinsomeplacestheoutsideoftheearthisthinandweak.Sometimesacrack(asmallopening)appears.Thehotmeltedrock，whichwecall“lava”，pushesupthroughthecrackandburststhrough.Steamandgasshootupintotheairandthehotmeltedlavapoursout.Bigpiecesofrockmay

4、bethrownhighintotheair.Afterawhilethevolcanobeesquietagain.Themeltedlavabeeshard.Laterthesamethinghappensagainandagain.Eachtimemorehotlavapoursoutontopofthecoldlavaandthenbeeshard.Inthiswayakindofmountainisbuiltup，withaholedownthemiddle.Perhapsthevolc

5、anowillthenbequietandnomorelavawillburstout.Perhapsitwillstartagainhundredsofyearslater.[词海拾贝]1．meltv．(使)融化，(使)熔化2．kettlen．水壶3．lavan．岩浆，熔岩4．burstthrough突然出现；突破5．shootup迅速上升；猛增[问题思考]1．Whatisthehotmeltedrockcalled?_______________________________________

6、________________2．Willvolcanoesstartagainafterlavaburstsout?_______________________________________________________答案：1.Lava.2．Somewillandsomewon't.自主预习步步提高词汇识记Ⅰ.将单词与其正确释义连线1．diagram　　　　A．欣赏；感激2．hurricaneB．绝对的；完全的3．absoluteC．候选人；候补者4．candidateD．贵重的；珍贵

7、的5．preciousE．文件；证件6．documentF．阳台7．balconyG．多种多样的8．trembleH．图表9．diverseI．飓风；暴风10．appreciationJ．摇晃，颤抖答案：1－H　2－I　3－B　4－C　5－D　6－E　7－F　8－J　9－G　10－AⅡ.根据所给汉语提示写出单词1．____________n．灰；灰末2．____________n．一套外衣vt.适合3．____________adj.实在的；实际的4．____________vt.射中；射伤5．_

8、___________adj.忧虑的；不安的6．____________vt.&vi.惊慌；恐慌7．____________vt.保证；担保8．____________vi.洗澡答案：1.ash　2.suit　3.actual　4.shoot　5.anxious　6.panic　7.guarantee　8.batheⅢ.根据英语释义写出单词1．________：nexttooralongthesideofsomething2．________：tocarefullyconsider