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1、__________________________________________________L2-U3-1/4listeningBusschedule1/aboutEarthA1.Hereisabusscheduleatabusstop.2.Ithasscheduleforthreebusesbetweeneightandninethirtyinthemorning.3.BusNo.38hasaregularschedule.4.Itcomeseveryfifteenminutes.5.Eightten,Eigh
2、ttwenty-five,eightforty,eightfifty-five,nineten,nighttwenty-five.6.BusNo.forty-sevencomeslessoften.7.Itcomesateighttwenty,eightforty-five,ninetwenty-five.8.BusNo.sixtyistheearliestbus.9.Itcomesateighto-five,eightthirty,andnineo’clock.10.BusNo.thirty-eighthasstops
3、atthemaintrainstationandtheairport.11.BusNo.sixtystopsatthemaintrainstation,butdoesgototheairport.12.BusNo.forty-sevendoesn’tgotoeitherthemaintrainstationortheairport.B1.Thisisourplanetearth.2.Ithasshapeofasphere,likeaball.3.Theequator(地球的赤道)devicetheearthintotwo
4、halvesequator.4.Thenorthernhalfisthenorthernhemisphere(半球体).5.Thesouthernhalfisthesouthernhemisphere.6.EuropeandAsiaarebothinthenorthernhemisphere.7.AustraliaandathirdofAfricaareinthesouthernhemisphere.C1.Theearthmovesintwoways.收集于网络，如有侵权请联系管理员删除_________________
5、_________________________________1.First,it’sbeenandrotates.2.It’srotatesarounditsaxis.3.Theaxisisalinethroughitscenter.4.Ittakestheearthtwenty-fourhourstocompletearotation.5.Thatisthelengthofoneday.D1.Second,theearthtravelsaroundthesun.2.Ittakesaboutthreehundred
6、sixty-fivedaysfortheearthtogoaroundthesun.3.Thatisthelengthofoneyear.4.It’saveragespeedduringtheyearisaboutthirtykilometerspersecond.E1.Theearth’saxisisnotperpendiculartothesun.2.Theearth’saxisistilted.3.Itistiltedatanangleofaroundtwenty-threepointfivedegrees.4.T
7、histiltcausestheseasonsoftheyear.F1.Duringpartoftheyear,northernhemisphereistiltedtowardthesun.2.Whenthenorthernhemisphereistiltedtowardthesun,itssummer.3.Whenthenorthernhemisphereistiltedawayfromthesun,itswinter.4.Thisiswhytheseasonsareoppositeforthenorthernands
8、outhernhemispheres.5.Whenit’ssummerinAustralia,it’swinterinEurope.G1.Whatwouldhappeniftheearth’stiltweredifferentthanitisnow.2.Iftheearthtiltswerelarger,summer
