高中英语Unit 21 Human Biology Warm up课件北师大版选修7 课件VIP免费

Inthisunityouwill…1.Readnewspaperandmagazinearticlesandusereadingstrategiestocompletetextswithparagraphgaps.2.Talkaboutissuesrelatedtohealthandmedicaladvances.3.Listentomonologues,dialogues,alesson,aradiophone-in,aTVprogramanduselisteningstrategiesforcompletinggapsintexts.4.Writeadiscursiveessay.5.Reviseandlearnmoreaboutconditionalsentences.KeyWordsLookatthefollowingstatementsanddecidewhichpartofthebodyisdescribed.ankle,brain,eye,heart,kidney,bone,knee,liver,lungs,muscle,ribs,spine,stomach,wrist,fingersKeyWords:TheBodyThisorganweighsaboutakiloandismadeupoftwosides.Itislikeasupercomputerthatprocessesinformation.Thisisaboutthesizeofaclosedhands.Itsjobistobreakdownthefoodweeatsothatwehaveenergyandcanbehealthyandstrong.brainstomachThisorganbeats100,000timesaday.Witheachbeatitmoves80millilitersofblood–that’s8,000litersofbloodperday!Itpumpsbloodintothelungs,whereitreceivesoxygen,beforebeingpumpedaroundtherestofthebody.heartThisisverydelicateorgan.It’smovedby6musclesandconsistsofvariousdifferentlayers.Lightentersandreachesspeciallightsensitivecells.Thisworkslikeacameraandfinallysendssignalstothebrain.eyeTheseorgansabsorbsoxygenandgetridofcarbondioxide.Theyaresituatedoneithersideoftheheart.Theyreceivesairasaresultofbreathingandwhenbloodpassesthrough,Theygiveitoxygen.lungskneemusclespineribKeyWordsLookatthepicturesandtellwhichpartsofthebodytheyare.boneanklewristfingerskidneyeyeheartliverlungsstomachbrainKeyWordsFindsixkeywordstolabelthepartsofthebodyinthediagram.liverbrainlungsstomachheartkidneyTestYourBodyMachineMemory.Writedown5telephonenumbersandgivethemtoyourpartnertolookatfor30seconds.Howmanycanshe\heremember?Heart.Findthepulseonyourpartner’sWrist.Howmanytimesdosehis\herHeartbeatin1minute?(Theslowerhis\herpulseis,themorerelaxedhe\heris.)DoYouLookAfterYourself?1.Howmanyhoursdoyousleeppernight?a)under6hoursb)about7or8hoursc)morethan9hours2.Howoftendoyoucleanyourteeth?a)onceadayb)twiceadayc)aftereverymeal3.Howoftendoyoudophysicalexercise,enoughtomakeyououtofbreath?a)neverb)onceaweekc)twoorthreetimesaweek4.Howoftendoyoueatsweetsorchocolatea)neverb)sometimesc)everyday5.Howmanypiecesoffreshfruitsdoyoueatperday?a)Oneortwob)morethantwoc)noneCheckyouranswerstothequestionnaire.1.a)Youprobablyaren’tgettingenoughsleep.b)7or8hourspernightissufficientformostpeople.c)youareasleepyhead,aren’tyou?2.a)Onceadayisnotenough!b)OnceinthemorningandonceatnightisprobablyOK.c)Verygood.Dentistsrecommendcleaningteethaftereverymeal.3.a)Youshouldtakeupsomekindofsport!b)Good-onceaweekisbetterthannever.c)Excellent!Youmustbeveryfit.4.a)Welldone.Youprobablysavelotsofmoneyondentistbills.b)Well,everynowandthenisOK.c)Youshouldcutdown.5.a)Good.Astheysay–anappleadaykeepsthedoctoraway.b)Verygood.Doctorrecommendseveralpiecesoffruitperday.c)Youreallyshouldtrytoeatmorefreshfruit.