Unit1 wake up Lesson 2【知识精研】培生朗文new big fun

ContentConnectionLifeScienceListenandread.Whatarebacteria?TakeaShowerWhenyourparentstellyoutotakeashower,theyaregivingyougoodadvice.Washyourface,behindyourears,andunderyourarms.Besuretowashyourwholebodywell.Usewarmwaterandsoaptowashawaybacteria.Bacteriaaretinylivingthingsthatcanmakeyousick.Whatisbacteria?Whereshouldwewashwhenwearetakingashower?HairHygieneWholeBodyHygieneWheretoCleanandWhattoUseWhatYouNeed:HairHygieneItisimportanttowashyourhairwithshampooregularly.Ifyoudon’twashyourhairregularly,itcanlookgreasyasoilsstarttobuilduponyourscalp.Remembertorinsealltheshampooawayattheendofyourbathorshower.BackWhatYouNeed:WholeBodyHygieneItisimportanttokeepyourbodycleanbyshoweringortakingabathregularly.Itisespeciallyimportanttowashourbodiesafterexerciseasthiscanmakeussweat!Washyourbodywithwarmwaterandsoaporshowergel.Thinkaboutthebodypartsthatmayneedcleanedmostfrequently-underourarms,betweenourlegsandourfeetwithallthosesweatglands!BackBrushYourTeethHowmanytimesdoyoubrushyourteeth?Tokeepyourteethstrongandhealthy,besuretobrushthemtwiceaday.Brushinthemorningwhenyouwakeup.Andbrushatnightbeforeyougotosleep.Brushingyourteethcleansawaybacteriathatcancausetoothdecay.It’simportanttobrushyourteethforatleasttwominutesatatime.HowCanWeKeepTeethHealthy?Weneedtolookafterourteethjustlikewelookaftertherestofourbody.Doyouknowhowtokeepyourteethhealthy?Let’sfindoutmore!BrushYourTeethLet’sfindouthow.Itisreallyimportanttobrushyourteethatleasttwiceaday.Brushingyourteethgetsridofanyfoodthatisaroundyourteeth.Itwashesawayanysugarandotherthingsthatcanhurtyourteeth.Doyouknowhowtobrushyourteethproperly?HowtoBrushYourTeethFirst,putapea-sizedamountoftoothpasteonthetoothbrush.Next,brushthefrontofyourteeth.Then,gentlybrushtheoutsideofyourteethandthebackteeth.Brushtheinsidesandtopsofallyourteeth.Then,gentlybrushyourtongue.Finally,spitoutanytoothpastethatisleftandyouarefinished.Evenifyouhavebeenlookingafteryourteeth,youshouldgoto

thedentistregularlyforacheck-up.VisitingtheDentistCanyoutell

afriendaboutatriptothedentist?Thisiswhatadentist’sroommightlooklike.Thedentistwilllookinyourmouthandatyourteethtoseeifthereareanyproblems.Theymightusespecialtoolstohelpthem,likethislittlemirror.Then,ifthereareanyproblems,thedentistcanhelptofixthem.Havinglotsofsugarisn’tgoodforteethasitcanhurtthem.

Somefoodshavelotsofsugarinsoweshouldn’teattoomuchofthem.FoodforHealthyTeethCanyouthinkofsomefoodsthataregoodforyourteeth?Itdoesn’tmeanwecan’teatthematall,justnotallthetime.Somefoodsaregoodforourteethastheyhelptomakethemstronger.Somedrinkshavelotssugarinthemtoo,evenfruitjuice.Itdoesn’tmeanwecan’tdrinkthem,justthatweshouldn’thave

lotsofitallthetime.DrinksforHealthyTeethWhichofthese

drinkscanIhave

allthetime?Thebestdrinkforteethiswater.

Milkisalsogoodasithelpstomaketeethstrong.Theteethyouhaveatthemomentarecalledmilkorbabyteeth.Asyoustarttogetolder,youneedbiggerteethandyourmilkteethstarttofallout.Don’tworry,itdoesn’thurt–itismeanttohappenanditdoesn’tmeanthereisanythingwrongwithyourteeth.WobblyTeethYoumightnoticeatoothstarttoget

abitwobbly.Then,afterafewdays,

itwillfallout.Theyusuallyonly

falloutoneatatime.Insomefamilies,childrenmayleavetheirtoothundertheirpilloworontheirbedsidetableforatoothfairy.Canyourememberallthedifferentwaysyoucanhelp

tokeepyourteethhealthy?WhatHaveYouLearnt?Eatfoodsthathelptomakeyourteethstrong.Brushyourteethtwiceaday.Visitthedentist.Drinkwaterormilk.WashYourHandsDoyouwashyourhandsatschool?Everyday,ourhandspickupmillionsofgermsthatcanmakeussick.Besuretowashyourhandswithsoapandwaterforatleasttwentyseconds.Washyourhandsbeforeyoueat,afteryouvisitthebathroom,afteryoucoughorsneeze,andanyothertimeyourhandsgetdirty.5dirtyfingers,

playinginthesand.

LotsandLotsofyuckygerms,

it’stimetowashourhands.

Scrubbetweenyourfingers!

Motherdemands.

4dirtyfingers,

nowwashthoseyuckyhands!4dirtyfingers,

playinginthesand.

Lotsandlotsofyuckygerms,

it’stimetowashourhands.

Scrubbetweenyourfingers!

Motherdemands.

3dirtyfingers,

nowwashthoseyuckyhands!3dirtyfingers,

playinginthesand.

Lotsandlotsofyuckygerms,

it’stimetowashourhands.

Scrubbetweenyourfingers!

Motherdemands.

2dirtyfingers,

nowwashthoseyuckyhands!2dirtyfingers,

playinginthesand.

Lotsandlotsofyuckygerms,

it’stimetowashourhands.

Scrubbetweenyourfingers!

Motherdemands.

1dirtyfinger,

nowwashthoseyuckyhands!1dirtyfinger,

playinginthesand.

Lotsandlotsofyuckygerms,

it’stimetowashourhands.

Scrubbetweenyourfingers!

Motherdemands.

Nodirtyfingers,

Lookatourcleanhands!Whatarethethreewaystokeepyoucleanandhealthy?Washingyourhands,showering,andbrushingyourteetharethreeeasythingsyoucandoeverydaytokeepyourselfcleanandhealthy.ReadandcircleTfortrueorFforfalse.CultureConnectionAroundtheWorldTimeZonesWhat’stheTime?Haveyoueverwonderedwhattimeitisindifferentcountriesaroundtheworld?Whileyouareinbedatnighttime,peopleinsomecountriesaregettingupandstartingtheirday.Inothercountries,peopleareatworkandschoolasitisn’tnight-timethereyet.Thisisalllinkedtoacountry’stimezone.London:9:00amLosAngeles:1:00amSydney7:00pmDayandNightThetimeofdaywilldependonwhereaboutsyouareonEarth.TheEarthrotatesonitsaxisandtheSunonlyshinesonthesideoftheEarthwhichisfacingit.ThismeansthatforthissideoftheEarthitwillbedaytime.OnthesideoftheEarthfacingawayfromtheSun,itwillbenighttime.WhatAreTimeZonesandMeridians?Earthisdividedintotimezonesbyimaginarylinescalledmeridians.MeridiansstartfromtheNorthPoleandruntotheSouthPole.Therewereoriginally24timezones,eachdivided

bymeridians15degreesapart.15degrees

multipliedby24makes360degreeswhich

isthecircumferenceoftheEarth.TheequatorsplitsEarthintothenorthern

andsouthernhemispheres.ThePrime

MeridiansplitsEarthintotheeastern

andwesternhemispheres.EquatorPrimeMeridianWhatIsThePrimeMeridian?ThePrimeMeridian,orGreenwichMeridian,isthestartingpointfortimezones.ItpassesthroughtheRoyalObservatoryinGreenwich,London.ThetimeattheGreenwichMeridianisknownasGreenwichMeanTime(GMT).CountrieswhichareintheeasternhemisphereareaheadofthetimeintheUK.IfaplaceisfivehoursinfrontofGreenwichMeanTimewesaythatitisGMT+5.CountrieswhichareinthewesternhemispherearebehindthetimeintheUK.IfaplaceisfivehoursbehindGreenwichMeanTimewesaythatitisGMT-5.PrimeMeridianSomecountriesaresobigthattheyarespreadacrossmorethanonetimezone.ChangingTimeZonesTimezoneshavechangedsincetheywerefirstset.Thisisbecauseofgeographical,socialandpoliticalreasonsinsomecountries.Therearenowmanymoretimezonesasseveralofthemareonly30or45minutesapart.Forexample,Samoa,inthemiddleofthePacificOcean,usedtositjusttotheeastoftheinternationaldateline.Thisimaginarylinedefinestheborderbetweenonedayandthenext.Therefore,Samoawasonedaybehinditsverycloseneighbours,AustraliaandNewZealand.ThismadeitdifficultforSamoatocommunicateandtradewiththethesecountrieswhentheywereadayaheadofthem.Eventually,thedatelinewasredrawnsothatSamoacouldbetothewestofit.TheTimeZonesHereisamapshowingtheEarth’scurrenttimezones.Ifyoulookcloselyatthetimezonesmap,youcanseethatsomecountries’timezonesdonotfitwiththeoriginalmeridiansrunningbetweentheNorthPoleandtheSouthPole.Writing-Sentence:SubjectsandVerbsSubjectsandVerbsAsentencehasasubjectandaverb.Sheeatsbreakfastbeforeschool.Sheisthesubject.Eatsistheverb.Iridemybiketoschool.Iisthesubject.Rideistheverb.SubjectsandVerbsSubjectsandVerbsSubjectsandVerbsSubjectsandVerbsSubjectsandVerbsPhonics:a_e,i_e,o_epaleStartTimerNextShowAnswerStartTimerUseTimerthradeStartTimerNextShowAnswerStartTimerUseTimersplateStartTimerNextShowAnswerStartTimerUseTimerpancakeStartTimerNextShowAnswerStartTimerUseTimerinflateStartTimerNextShowAnswerStartTimerUseTimerdrameStartTimerNextShowAnswerStartTimerUseTimermistakeStartTimerNextShowAnswerStartTimerUseTimerflaneStartTimerNextShowAnswerStartTimerUseTimerinvadeStartTimerNextShowAnswerStartTimerUseTimershapeStartTimerNextShowAnswerStartTimerUseTimerslideStartTimerNextShowAnswerStartTimerUseTimerkideStartTimerNextShowAnswerStartTimerUseTimergimeStartTimerNextShowAnswerStartTimerUseTimerkiteStartTimerNextShowAnswerStartTimerUseTimerquibeStartTimerNextShowAnswerStartTimerUseTimerprizeStartTimerNextShowAnswerStartTimerUseTimerhineStartTimerNextShowAnswerStartTimerUseTimerdrikeStartTimerNextShowAnswerStartTimerUseTimerfiveStartTimerNextShowAnswerStartTimerUseTimertimeStartTimerNextShowAnswerStartTimerUseTimertrifeStartTimerNextShowAnswerStartTimerUseTimerbikeStartTimerNextShowAnswerStartTimerUseTimerglineStartTimerNextShowAnswerStartTimerUseTimerinviteStartTimerNextShowAnswerStartTimerUseTimerw