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ID:45654519
大小:102.80 KB
页数:8页
时间:2019-11-15
《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,更多相关内容在教育资源-天天文库。
1、TheOlympicGames***阅读理解Crossingyourlegsisanextremelymonhabit;mostpeopledon’tevennoticethatthey’redoingitwhentheysitdown.Whileyoumayfinditfortabletositwithonekneecrossedovertheother,itmightbecausinghealthproblemsthatyouarenotawareof.AstudypublishedinBloodPressureMonitoringstatedthatsittingwithyourlegs
2、crossedcanincreaseyourbloodpressure.Thereasonforthisisthatthebloodinyourlegshastoworkagainstgravitytobepumpedbacktoyourheartandthatcrossingonelegovertheotherincreasesresistance,makingitevenharderforthebloodtocirculate.Thiscausesyourbodytoincreaseyourbloodpressuretopushthebloodbacktotheheart.Youwon’t
3、feelanyimmediateeffects,butrepeated,drawnoutincreasesinbloodpressurecancauselongtermhealthissues.So,planningtositforalongperiodoftime?Don’tkeepyourlegscrossed.“Crossingyourlegsatthekneecanalsocausepressureonthemajornerveinyourlegthatpassesjustbelowyourkneeandalongtheoutsideofyourleg,”explainsRichard
4、Graves,amedicalexpert.Thispressurecancausenumbnessandtemporaryparalysis(麻痹)ofsomeofthemusclesinyourfootandleg,preventingyoufrombeingabletoraiseyourankle—whatweknowasthat“pinsandneedles”sensation.Whilethefeelingofdisfortmayonlylastaminuteortwo,repeatedlycrossingyourlegsuntiltheyfeelnumbcancauseperman
5、entnervedamage.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.Whatcanwelearnaboutcrossingone’sle
6、gs?A.Itisaverybadsocialhabit.B.Itisusuallypracticeddeliberately.C.Itcandoharmtopeople’shealth.D.Itcanmakeothersfeelunfortable.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.leadtoheartattackseasilyD.im
7、provethefunctionoflegsA 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.beinghighlyfle
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