高中英语Unit 21 Human Biology Warm up北师大版教材选修7 (精品)-豆柴文库

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Inthisunityouwill…
Readnewspaperandmagazinearticles
andusereadingstrategiestocomplete
textswithparagraphgaps.

2.Talkaboutissuesrelated
tohealthandmedical
advances.
3.Listentomonologues,dialogues,a
lesson,aradiophone-in,aTVprogram
anduselisteningstrategiesfor
completinggapsintexts.

4.Writeadiscursiveessay.

5.Reviseandlearnmore
aboutconditional
sentences.KeyWordsThisorganweighsaboutakiloandismade
upoftwosides.Itislikeasupercomputerthat
processesinformation.Thisorganbeats100,000times
aday.Witheachbeatitmoves80
millilitersofblood–that’s8,000
litersofbloodperday!Itpumps
bloodintothelungs,whereit
receivesoxygen,beforebeing
pumpedaroundtherestofthe
body.Thisisverydelicateorgan.It’s
movedby6musclesandconsistsof
variousdifferentlayers.Lightenters
andreachesspeciallightsensitive
cells.Thisworkslikeacameraand
finallysendssignalstothe
brain.Theseorgansabsorbsoxygenandgetridof
carbondioxide.Theyaresituated
oneithersideoftheheart.They
receivesairasaresultofbreathing
andwhenbloodpassesthrough,
Theygiveitoxygen.kneeboneheartKeyWordsliverTestYourBodyMachine
Memory.Writedown5telephonenumbers
andgivethemtoyourpartnertolookatfor
30seconds.Howmanycanshe\he
remember?
Heart.Findthepulseonyourpartner’s
Wrist.Howmanytimesdosehis\her
Heartbeatin1minute?
(Theslowerhis\herpulseis,themore
relaxedhe\heris.)DoYouLookAfterYourself?

1.Howmanyhoursdoyousleeppernight?
under6hoursb)about7or8hours
c)morethan9hours

2.Howoftendoyoucleanyourteeth?
onceadayb)twiceaday
c)aftereverymeal3.Howoftendoyoudophysicalexercise,
enoughtomakeyououtofbreath?
neverb)onceaweek
c)twoorthreetimesaweek

4.Howoftendoyoueatsweetsorchocolate
neverb)sometimesc)everyday

5.Howmanypiecesoffreshfruitsdoyou
eatperday?
a)Oneortwob)morethantwoc)noneCheckyouranswerstothe
questionnaire.

1.a)Youprobablyaren’tgettingenoughsleep.
b)7or8hourspernightissufficientformost
people.
c)youareasleepyhead,aren’tyou?
2.a)Onceadayisnotenough!
b)Onceinthemorningandonceatnightis
probablyOK.
c)Verygood.Dentistsrecommendcleaning
teethaftereverymeal