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

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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