语法填空(共10小题，每小题1.5分，满分15分)
Onceuponatimeindustrialgoodsweremadetolastforever.Ifyouboughtacarorastove,itwasaonce-in-a-lifetimeinvestment.You   51   (pay)goodmoneyforit,andyoutookgoodcareofit.Atthepresenttime,   52  ,industryhassuggestedthatproductsshouldn’tlastalongtime.It’scheapertothrowthemawaythan   53   (repair)them.Thishascreateda“throw-awaysociety”whichis
  54   wasteoftheearth’sresources.Justthinkofthoseprettynewsecond-handcarsthataresolddaily.Theownersgetridofthemjust   55   theyareoutofdate.Thinkoftheexpensivepackagingmaterialthat   56   (throw)awayeachtimeanewitemisbought.Andwehavetopayforthatmaterial!Thiswastehasgotusintothetroubleweare   57   now.Whenwehavenoresources
  58   (leave),we’llthenstarttotakecareof   59   wehave.Butwhycan’tweactbeforethishappens?Whycan’twegobacktothesociety
  60   thepreventionofwasteisavirtue?