Nowadays,withthedevelopingoftherapideconomic,thecityairhasbeenpollutedheavily.moreover,agreatnumberofnewstyletransportiontoolscomeoutleadingtotoughtraffic.readingabicyclehasbeencalledontodeclinethepollution.

　　Ihadaforgetableexperienceoflearningtorideabicyle.,iwasscaredtorideonthebicycleonmyown.myfatherwasalwaysaftermeclosely.withthehelpofmyfather,afteralongtime,iamnotafraidtoridealone.thatistosay,i'velearnedwell.iamgratefulfordad.hegavemethecouragetoovercomethedifficulty.sincethat,whenicomeacrossanyproblems,iwillthinkofmyfatherandthepowerhegivesme.