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ID:32627960
大小:70.50 KB
页数:9页
时间:2019-02-13
《2019年高考英语一轮巩固达标练题unit2theolympicgames(含解析)新人教版必修2》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、TheOlympicGames李仕才***阅读理解Crossingyourlegsisanextremelycommonhabit;mostpeopledon"tevennoticethatthey"redoingitwhentheysitdown.Whileyoumayfinditcomfortabletositwithonekneecrossedovertheother,itmightbecausinghea1thproblemsthatyouarenotawareof.AstudypublishedinBloodPressureMonitoringstatedthatsi
2、11ingwithyourlegscrossedcanincreaseyourbloodpressure・Thereasonforthisisthatthebloodinyourlegshastoworkagainstgravitytobepumpedbacktoyourheartandthatcrossingone1egovertheotherincreasesresistanee,makingitevenharderforthebloodtocirculate.Thiscausesyourbodytoincreaseyourbloodpressuretopushtheblo
3、odbacktotheheart・Youwon,tfeelanyimmediateeffects,butrepeated,drawn-outincreasesinbloodpressurecancauselong-termhealthissues・So,planningtositforalongperiodoftime?Don'tkeepyourlegscrossed.uCrossingyourlegsatthekneecanalsocausepressureonthemajornerveinyourlegthatpassesjustbelowyourkneeandalongt
4、heoutsideofyourleg,”explainsRichardGraves,amedicalexpert.Thispressurecancausenumbnessandtemporaryparalysis(麻痹)ofsomeofthemusclesinyourfootandleg,preventingyoufrombeingabletoraiseyourankle—whatweknowasthat"pinsandneedles”sensation.Whilethefeelingofdiscomfortmayonlylastaminuteortwo,repeatedlyc
5、rossingyourlegsunti1theyfeelnumbcancausepermanentnervedamage.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。
6、所以不要跷二郎腿,要有正确的坐姿。1.What,canwelearnaboutcrossingone'slegs?A.Itisaverybadsocialhabit.B.Itisusuallypracticeddeliberately.A.Itcandoharmtopeople'shealth.B.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。1.Accordingtothestudy,sittingwithyourlegscrossedcan.A.affectyourblood
7、pressureB.resistgravityeffectivelyC.leadtoheartattackseasilyD.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。2.Inthethirdparagraph“pinsandneedles"probablymeans“”.A.slightlysharppainsB-beingalittletiredC.seriousmuscleinjuriesD
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