- Itisundeniablethattheworseningenvironmenthasbecomethebiggestconcernofthepresent-dayworld.Landresourcesaredwindlingbecauseofwater[複習必備|海量免費學習視頻資源盡在“學而思輕課APP”>>>點擊瞭解]lossandsoilerosion.Wastegasespoisontheairwebreathe.Theriver...
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- Theearthscalechangeofclimatehasbroughtanewkindofnaturaldisasterandthedevelopedandcomplicatedcitysystemisholdingalatentriskofexpandingthedamageartificially.Alsopeoplehasbeenspoilingthehealthsincetheimmensequantityofchemicalshavebeenproducedandalreadyu...
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