51.One variety of partially biode gradable plasticb everage containe rismanu facture dfrom small bits of plastic  boundtogetherbyadegradablebondingagentsuchascornstarch.Sinceonlythebondingagentdegrades, leavingthesmallbitsofplastic,nolessplasticrefusepercontainerisproducedwhensuchcontainersare discardedthanwhencomparablenonbiodegradablecontainersarediscarded.
 
 Whichofthefollowing,iftrue,moststrengthenstheargumentabove?
   (A)Bothpartiallybiodegradableandnonbiodegradableplasticbeveragecontainerscanbecrushed completelyflatbyrefusecompactors.
  (B)Thepartiallybiodegradableplasticbeveragecontainersaremadewithmoreplasticthancomparable nonbiodegradableonesinordertocompensatefortheweakeningeffectofthebondingagents.
  (C)Manyconsumersareecology-mindedandprefertobuyaproductsoldinthepartiallybiodegradable plasticbeveragecontainersratherthaninnonbiodegradablecontainers,evenifthepriceishigher.
  (D)Themanufacturingprocessforthepartiallybiodegradableplasticbeveragecontainersresultsinless plasticwastethanthemanufacturingprocessfornonbiodegradableplasticbeveragecontainers.
  (E)Technologicalproblemswithrecyclingcurrentlypreventthereuseasfoodorbeveragecontainersofthe plasticfromeithertypeofplasticbeveragecontainer.
  不太理解B的tocompensatefortheweakeningeffectofthebondingagents 的意思,这个有什么密切关联呢?
  我想法 A=X+bonding agent ,X ---> X'       &      B = Y  , Y  --->Y' ,              X' ≥ Y'   ---> X ≥Y  (这里 A : Bio-- container  B : Non bio --- container   X = Y: plastic  X' = Y': plastic refuse  ) |