欢迎来到天天文库
浏览记录
ID:45804539
大小:64.80 KB
页数:5页
时间:2019-11-17
《2019-2020年高三英语一轮复习Unit2Healthyeating课时作业新人教版必修》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、2019-2020年高三英语一轮复习Unit2Healthyeating课时作业新人教版必修Ⅰ.阅读理解A(xx·银川检测)Crossingyourlegsisanextremelymonhabit;mostpeopledon'tevennoticethatthey'redoingitwhentheysitdown.Whileyoumayfinditfortabletositwithonekneecrossedovertheother,itmightbecausinghealthproblemsthatyouarenotawareof.A
2、studypublishedinBloodPressureMonitoringstatedthatsittingwithyourlegscrossedcanincreaseyourbloodpressure.Thereasonforthisisthatthebloodinyourlegshastoworkagainstgravitytobepumpedbacktoyourheartandthatcrossingonelegovertheotherincreasesresistance,makingitevenharderfortheblo
3、odtocirculate.Thiscausesyourbodytoincreaseyourbloodpressuretopushthebloodbacktotheheart.Youwon'tfeelanyimmediateeffects,butrepeated,drawnoutincreasesinbloodpressurecancauselongtermhealthissues.So,planningtositforalongperiodoftime?Don'tkeepyourlegscrossed.“Crossingyourlegs
4、atthekneecanalsocausepressureonthemajornerveinyourlegthatpassesjustbelowyourkneeandalongtheoutsideofyourleg,”explainsRichardGraves,amedicalexpert.Thispressurecancausenumbnessandtemporaryparalysis(麻痹)ofsomeofthemusclesinyourfootandleg,preventingyoufrombeingabletoraiseyoura
5、nkle—whatweknowasthat“pins_and_needles”sensation.Whilethefeelingofdisfortmayonlylastaminuteortwo,repeatedlycrossingyourlegsuntiltheyfeelnumbcancausepermanentnervedamage.Sonexttimeyousitdown,trytogetyourselfinthehabitofsittingwithbothofyourfeetonthefloor.Notonlywillithelpy
6、ourpostureandstability,butitwillalsosaveyourhealthinthelongrun.【文章大意】 本文是一篇说明文。文章介绍了人们将一条腿放在另一条腿上(跷二郎腿)的习惯,这种行为会导致一些健康问题。【难句分析】Thereasonforthisisthatthebloodinyourlegshastoworkagainstgravitytobepumpedbacktoyourheartandthatcrossingonelegovertheotherincreasesresistance,maki
7、ngitevenharderforthebloodtocirculate.(第二段第二句)分析:本句是一个主从复合句。两个that引导的都是表语从句,“makingit...tocirculate”为现在分词短语作结果状语。译文:这是因为腿部的血液要回流到心脏,就要与重力对抗,并且把一条腿放在另一条腿上会加剧这种对抗,这使得血液循环更难了。1.Whatcanwelearnaboutcrossingone'slegs?A.Itisaverybadsocialhabit,B.Itcandoharmtopeople'shealth.C.Itis
8、usuallypracticeddeliberately.D.Itcanmakeothersfeelunfortable.答案与解析:B'考查细节理解。根据文章前三段内容可知,人们将一条腿放在
此文档下载收益归作者所有