losAngElEs hAs plAntED 2,000 ruBBEr trEEs Down thE miDDlE oF onE oF its mAin strEEts. thEsE trEEs Do not (21) ruBBEr. thEy ArE, (22) , mADE oF ruBBEr. mr. joEDynAmo, A spokEsmAn For losAngElEs (23) CounCil, ExplAinED thE rEAsons. hE sAiD: "thEsE (24) ArE rEprEsEntAtivE oF our virtuAl soCiEty. wE hAvE polystyrEnE grAss on our golF (25) . wE hAvE non-milk powDEr (26) our CoFFEE. wE (27) CopiEs in plAstiC oF olD wooDEn FurniturE. wE hAvE FiBErglAss tomBstonEs. (28) shoulDn’t wE hAvE trEEs mADE oF ruBBEr " "At 50 milEs An hour, (29) motorist will sEE Any DiFFErEnCE.AnD our prEsErvAtion (30) will BE lowEr. you givE thE trEEs An AnnuAl rinsE with DEtErgEnt, AnD (31) thEm oFF twiCE A yEAr. wE (32) A lot oF monEy BECAusE trAnsplAnting, pruning, wEEDing AnD lEAF-CollECtion ArE All (33) AnD wE hAvE A 60-yEAr (34) guArAntEE on EACh plAnt. this is rAtionAlizAtion At (35) BEst.\ A、in FACt B、EvEntuAlly C、prACtiCAlly D、As A mAttEr