这篇作文条理清晰，语句通顺，值得推荐，尤其是连词的运用。

SustainableDevelopment

Theideaofsustainabledevelopmenthasbeenacceptedbytheworld.Howtokeepsustainabledevelopmentisabigproblemfacingourplanet.

Thepresentsituationisworrying.First，naturalresourcesarebecominglessthanbefore.Second，assomepeoplearenotawareoftheimportanceoftheenvironmentalprotection，theproblemswithitremainextremelyserioustosomedegree.Thegapbetweentherichandthepoorhasthetendencytobecomewiderandwider.

Toourgreatjoy，manycountrieshavetakenaction.Ononehand，theyhavemaderelevantlawsandregulationsandputlargeamountsofmoneytotheenvironmentalprotection.Onetheotherhand，popularizededucationaswellasinternationalcooperationisbeingcarriedout.

Asformyself，Ishouldtaketheresponsibilitytodevotemyselftosustainabledevelopment，ourfutureandthelivesofourchildrenandourgrandchildrenwillbeindanger.