![Thirtyyearsago,LakePonkapoginHartwell,NewJersey,wasfull...]( "Thirtyyearsago,LakePonkapoginHartwell,NewJersey,wasfull...")
- 問題詳情：Thirtyyearsago,LakePonkapoginHartwell,NewJersey,wasfulloflife.Manybirdsandanimalslivedbesidethewater,whichwasfulloffish.Thelakewaterispolluted.Itisinacolorofdirtybrown,anditisfilledwithstrangeplants.Howdidthishappen?First,wemustthinkabouthoww...
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