Polyester(聚酯)isnowbeingusedforbottles.ICI,thechemicalsandplasticscompany,believesthatitisnowbeginningtobreakthegripofglassonthebottlebusinessandthustakeadvantageofthishugemarket. Alltheplasticsmanufacturershavebeenexperiencinghardtimesastheirtraditionalproductshavebeendoingbadlyworld-wideforthelastfewyears.Between1982and1984thePlasticsDivisionofICIhadlostahundredandtwentymilliondollars,andtheyfeltthatthemosthopefulnewmarketwasinpackaging,bottlesandcans. Since1982ithasopenedthreenewfactoriesproducing"Melinar",therawmaterialfrownwhichhighqualitypolyesterbottlesaremade. Thepolyesterbottlewasborninthe1970s,whensoftdrinkscompanieslikeCocaColastartedsellingtheirdrinksingianttwo-litercontainers.Becauseofthebuild-upofthepressureofgasintheselargecontainers,glasswasunsuitable.NorwasPVC,theplasticwhichhadbeenusedforbottlessincethe1960s,suitablefordrinkswithgasinthem.Anewplastichadtobemade. Glassisstillcheaperforthesmallerbottlesandwillcontinuetobeso,unlessoilandplasticbecomemuchcheaper,butplasticdoeswellforthelargersizes. Polyesterbottlesarevirtuallyunbreakable.Themanufacturersclaimtheyarealsolighter,lessnoisywhenbeinghandled,andcanbereused.Shopkeepersandotherbusinesspeopleareunlikelytoobjecttoachangefromglasstopolyester,sincethesebottlesmeanfewbreakages,whicharecostlyandtime-consuming.Thepublic,though,havebeenmoredifficulttopersuade.ICI'scommercialdepartmentisdevelopingdifferentbottleswithinterestingshapes,totryandmake themvisuallymoreattractivetothepublic. Thenextstepcouldbetodevelopaplasticwhichcouldreplacetinsforfood.Theproblemhereisthehightemperaturesnecessaryforcookingthefoodinthecontainer. Whyaren'tallbottlesnowmadeofpolyester?
A.The price of oil and plastic has risen.
B.It is not suitable for containing gassy drinks.
C.The public like traditional glass bottles.
D.Shop-keepers dislike reusable bottles.
正确答案是C