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ID:35688085
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时间:2019-04-12
《2019年高考英语一轮巩固达标练题unit2theolympicgames(含解析)新人教版》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、TheOlympicGames李仕才***阅读理解Crossingyourlegsisanextremelycommonhabit;mostpeopledon’tevennoticethatthey’redoingitwhentheysitdown.Whileyoumayfinditcomfortabletositwithonekneecrossedovertheother,itmightbecausinghealthproblemsthatyouarenotawareof.AstudypublishedinBloodPressureMonitoringstatedthatsittingw
2、ithyourlegscrossedcanincreaseyourbloodpressure.Thereasonforthisisthatthebloodinyourlegshastoworkagainstgravitytobepumpedbacktoyourheartandthatcrossingonelegovertheotherincreasesresistance,makingitevenharderforthebloodtocirculate.Thiscausesyourbodytoincreaseyourbloodpressuretopushthebloodbacktotheh
3、eart.Youwon’tfeelanyimmediateeffects,butrepeated,drawnoutincreasesinbloodpressurecancauselongtermhealthissues.So,planningtositforalongperiodoftime?Don’tkeepyourlegscrossed.“Crossingyourlegsatthekneecanalsocausepressureonthemajornerveinyourlegthatpassesjustbelowyourkneeandalongtheoutsideofyourleg,”
4、explainsRichardGraves,amedicalexpert.Thispressurecancausenumbnessandtemporaryparalysis(麻痹)ofsomeofthemusclesinyourfootandleg,preventingyoufrombeingabletoraiseyourankle—whatweknowasthat“pinsandneedles”sensation.Whilethefeelingofdiscomfortmayonlylastaminuteortwo,repeatedlycrossingyourlegsuntiltheyfe
5、elnumbcancausepermanentnervedamage.Sonexttimeyousitdown,trytogetyourselfinthehabitofsittingwithbothofyourfeetonthefloor.Notonlywillithelpyourpostureandstability,butitwillalsosaveyourhealthinthelongrun.【解题导语】 本文是一篇科普说明文。研究表明,虽然跷二郎腿是常见的习惯,但是该习惯会引起血压的升高,还会导致膝盖以下的重要神经受损。所以不要跷二郎腿,要有正确的坐姿。1.Whatcanwelea
6、rnaboutcrossingone’slegs?A.Itisaverybadsocialhabit.B.Itisusuallypracticeddeliberately.C.Itcandoharmtopeople’shealth.D.Itcanmakeothersfeeluncomfortable.C 解析:细节理解题。根据第一段的第二句可知,跷二郎腿会引起健康问题,故C项正确。2.Accordingtothestudy,sittingwithyourlegscrossedcan.A.affectyourbloodpressureB.resistgravityeffectivelyC.l
7、eadtoheartattackseasilyD.improvethefunctionoflegsA 解析:细节理解题。根据第二段的第一句可知,研究表明,跷二郎腿会引起血压的升高,故A项正确。3.Inthethirdparagraph“pinsandneedles”probablymeans“”.A.slightlysharppainsB.beingalittletiredC.seriousmuscleinjuriesD
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