2018届高三英语总复习 第一部分 回归教材 unit 3 computers课时作业 新人教版必修2

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1、Unit3ComputersⅠ.阅读理解Everyfewyearscomesafitnesstrendthathaspeoplescratchingtheirheadsinamazement.“Crunning”willprobablybeoneofthem.The“c”standsfor“crawling”(爬行).Thisnewsportneedstwoleggedhumansrunningonallfours!ThefunnyideaisthebrainchildofShaunMcCarthy.The34year

2、oldisconvincedthatitwillrevolutionizefitnessasweknowit.Accordingtothesportsenthusiast,“Theonlythingthatcrunning'schangedaboutfitnessisthatit'schangedeverythingaboutfitness.”McCarthyhasnoscientificevidencetoprovethatcrunningismoreefficientthantraditionaltwolegged

3、running.However,hebelievesitisamoreeffectivewaytoexercisebecauseitputsanemphasisontheshouldersandarms,providingacompletebodyworkout.McCarthyalsosayscrunningseemstotirehimoutmore.Hethereforeconcludesthattheunconventionalexerciseisabiggercalorieburnerthannormalrun

4、ning.Whileexpertsgenerallyagreethatcrunningmayprovideabetterworkout,manyarenotsureifitistherightexerciseforhumans.FitnesscoachKevinDeansayswearenotbuilttobeonallfoursandourwristsarethereforenotasstrongasourankles.Hebelievescrunning,whichhecallsafad(时尚),couldresu

5、ltinbadwristandshoulderinjuries,nottomentionbrokennoses.ButMcCarthyisnotworried.Sincethereleaseofhiscrunningvideoafewweeksago,manyMelbourneresidentshavebeenseenscamperingaroundonallfours.Asitturnsouttheyarenottheonlyones.IntheChinesecityofZhengzhou,crawling,amuc

6、hslowerversionofcrunning,hasbeenafavoriteactivityformanyyears.Accordingtosomeenthusiasts,thelightexercisethatisbelievedtodatebacktwothousandyearstotheHanDynasty,isgoodforcuringbackandspineailments.Readytogivecrunningatry?ThenMcCarthyrecommendsinvestinginsomegood

7、shoes,hardyglovesandmostimportantofall,afacemask!1．WhatcanwelearnaboutcrawlingaccordingtoKevinDean?A．Ouranklesarestrongerthanourwrists.B．Crawlingisanefficientwaytoworkout.C．ThecityofZhengzhouistheoriginofcrawling.D．Crawlingcanburnmorecaloriesthannormalrunning.2．

8、Whatdoestheauthorthinkofcrunning?A．Dangerous.　　　　　　B．Interesting.C．Beneficial.D．Unbelievable.3．WhydoesMcCarthysuggestpeoplewearingafacemaskwhencrunning?A．Toamuseother