托福阅读背景之雷雨的介绍-智课教育旗下智课教育

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1、智课网托福备考资料托福阅读背景之雷雨的介绍-智课教育旗下智课教育本文是智课教育小编为大家带来的托福阅读背景，雷阵雨(Thundershowers)是一种天气现象，在托福阅读各类题材中会有所涉及。智课教育小编为考生带来托福阅读背景之雷雨的介绍。雷阵雨(Thundershowers)是一种天气现象，表现为大规模的云层运动，比阵雨要剧烈的多，还伴有放电现象，常见于夏季。希望大家可以从中理解并掌握一些专业词汇，同时学习相关背景知识。Despitetheirdramaticbehavior,thunderstormsarethesmallestofthedifferentkindso

2、fstorms.Theyaveragearound16km(10mi)across,buttheyoftenoccurinlinesthatcanbeafewhundredmileslongorclustersacouplehundredmilesacross.Thunderstormsareoftenpartoflargerstormssuchashurricanes.Whilethunderstormsoccurmostcommonlyinwarmweather,theycanhappeninthewinter.Sometimessnowwillfallfromathu

3、nderstorminsteadofrain;thisiscalleda“thundersnow.”Everythunderstormincludeslightningbecauselightningcausesthunder.Lightningcreatesadangerinanythunderstorm,nomatterhowlargeorsmall.Manythunderstormsdrenchthecountrysidewithheavyrain,soyoualsohavetoworryaboutflashfloods—thatis,floodsthatriseve

4、ryquickly,sometimesrunningoverthebanksofnormallysmallstreams.Ifathunderstormisstrongenough,itcanalsocreatehail,orballsoficethatfallfromthestorm.Hailstonesareusuallylessthan1.3cm(0.5in)across.Occasionallyhailstonesasbigassoftballsfallduringstorms,posingconsiderabledangerbecausesuchlargeston

5、esfallfasterthan160km/h(100mph).Someespeciallydangerousthunderstormscreatewindscalleddownbursts,whichdescendfromthecloudsandhitthegroundgoingfasterthan160km/h(100mph).Downburstsaresometimesconcentratedinsmallareaslessthan4km(2.5mi)acrosscalledmicrobursts.Thunderstormsalsosometimescreatetor

6、nadoesinthewarmairthat’srisingfromtheground.Unlikemicrobursts,tornadowindsspininacircleastheairrises.Tornadowindscanblowfasterthan400km/h(250mph),buttwistersthisstrongarerare.以上就是智课教育小编为大家带来的托福阅读背景，平时的阅读练习是托福考试阅读备考的重要一环。希望大家利用好每份材料，尽可能多地从中获取知识。预祝大家托福考试取得好成绩!