以节能环保为题假设你是星光中学的李华，将参加主题为“Let’sridebicycles”的英语演讲比赛活动。请撰写一份演讲稿，主要内容：1、目前汽车带来的空气污染和交通堵塞问题2、骑自行车的益处，如节能环保，有利健康等3、参考词汇low-carbonlifeenergysaving范文：Goodmorning，everyone，I’mLiHuafromXingGuangMiddleschool。Thetopicofmyspeechis"Let’sridebicycle”。Asisknowntoall，withtheimprovementofpeople’slivingstandards，carshavebecomeapopularmeansoftransport，bringinggreatconveniencetoourlife。However，theyhavealsocausedsomeproblemssuchasairpollutionandtrafficjams。Howcanwesolvetheproblemsthen?AsfarasIamconcerned，ridingbicyclesisagoodsolution。Foronething，bicyclesdon’tneedanypetrolandtheyareenergy–saving。Foranother，bicyclesareenvironmentallyfriendlybecausetheywon’tgiveoffwastegas。What’smore，ridingbicyclesisagoodwayforustoexerciseanditisbeneficialtoourhealth。Therefore，let’staketheresponsibilitytobuildupalow-carboncitybyridingbicycles。Comeonandjoinus!Thankyou!中国文化为题假设你是李华，曾在美国学习半年，现已回国。你想联系你的美国老师Mr.Smith，但没有联系方式。请根据以下要点给你的美国同学写信1.感谢Tom对你学习上的帮助2.询问Mr.Smith的近况并索要其联系方式3.邀请Tom在春节来中国感受中国文化。范文：DearTom，ThankyouverymuchforyourkindhelpwhenIstayedinAmerica。Withyourhelp，myEnglishhasimprovedalotandmyteachersandfriendsaresurprisedatmyfluentEnglish.HowisMr.Smith?Iwanttoknowsomethingabouthislife.Itriedtogetintouchwithhim，butunfortunatelyIdon’thavehisaddressandcan’tconnectwithhim。Doyouhavehisemailaddressorhistelephonenumber?Thespringfestivaliscoming。ItisanimportanttraditionalfestivalforChinese，whenallthefamilymembersgettogether。ItislikeChristmasinthewesterncountries。WouldyouliketocometofeeltheChineseculture?Iamsureyouwilllivehappilyhereandlearnalotoffunnythings。Besides，Icanalsoshowyouaroundsomeplacesofinterest.Bestwishes!Iamlookingforwardtoyourreply。Yours，Lihua我要微笑某报社拟成立“微笑俱乐部”，现向全球征募会员，要求申请者提交一篇题为“Iwanttosmile"的英语短文。请你以申请者的身份，根据以下思路写一篇。AdvantagesofsmileSmileatparentsandfriends----范文：IwanttosmileTherearemanyadvantagesofsmiling.Itcannotonlymakeushappy，butalsopleaseothers.Ifwesmileatlife，lifewillsmileonusinreturn.SoIwanttosmileatallwheneverandwhereverpossible.First，Iwouldliketosmileatparentsbecausetheyhave