Unit3所有植物都需要光和水。地球上有很多跟你我一样的人。地球给我们提供空气、水和食物。它是我们的家。今天，这里有很多污染。我们燃烧东西去制造能量。保护地球对我们的未来非常重要。

1.provide…with2.burn3.pollute4.kill5.protect6.ononesownkeep…safeset…onfiregivemake…dirtymake…diebyoneself

ProtecttheEarthforestsriversmountainsfieldsveryhotverycoldpollutionburnthings;rubbishkillsanimalsandplantsmanypeopleair,waterandfoodourhomedifferentplantslargesmalldifferentanimalsonthelandintheskyunderthewaterstopdoingthese;important

Whoisthefastest?

1Therearedifferentanimals_________Earth.A.on B.inC.with D.to2.----Whatdotheplantsneedtolive?----Theyneed_________andwater.A.alight B.lightsC.lightD.manylights3.Weoftenhavea_________atthebeginningoftheclass.A.pattern B.quizC.rideD.guitar4.Stop_________aroundandgetonwiththejob.A.play B.toplayC.playsD.playing

5.Taiwanisa_________ofChina.A.landB.bodyC.partD.section6.----Dontthrow_________rubbishontheground.----Oh,Imsorry.A.aB.anC./ D.the7._________isdifficultforustofinishtheworkinaday.A.ThatB.ThisC.ItD.He8.Dont_____yourfingers______yourmouth.A.put;intoB.throw;intoC.put;upD.put;aside.