分类：教育/科学-外语学习
问题：帮忙解决下面英语题谢谢Wecanseehowtheproduct 
Wecanseehowtheductlifecycleworksbylookingattheintroductionofinstantcoffee.Whenitwasintroduced,mostpeopledidnotlikeitaswellas“regular”coffeeandittookseveralyearstogaingeneralacceptance(introductionstage).Atonepoint,though,instantcoffeegrewrapidlyinpopularityandmanybrandswereinWecanseehowtheductlifecycleworksbylookingattheintroductionofinstantcoffee.Whenitwasintroduced,mostpeopledidnotlikeitaswellas“regular”coffeeandittookseveralyearstogaingeneralacceptance(introductionstage).Atonepoint,though,instantcoffeegrewrapidlyinpopularityandmanybrandswereintroduced(stageofrapidgrowth).Afterawhile,peoplebecameattachedtoonebrandandsalesleveledoff.(stageofmaturity).Saleswentintoaslightdecline(衰退)whenfreeze-driescoffeeswereintroduced(stageofdecline).Theimportanceoftheproductlifecycletomarket ,forexample,thatthebackpacksthatsomanystudentscarrytodaywereoriginallydesignedforthemilitary?Marketmodificationalsomeanssearchingforincreasedusageamongpresentcustomersorgoingforadifferentmarket,suchasseniorcitizens.Amarketermayre-positiontheproducttoappealtomewmarketsections.Anotherproductextensionstrategyiscalledproductmodification.Itinvolveschangingproductquality,features,orstyletoattractnewusersormoreusagefrompresentusers.Americanautomanufacturersareusingqualityimprovementasonewaytorecaptureworldmarkets.Note,also,howautomanufacturersoncechangedstylesdramaticallyfromyeartoyeartokeepdemandfromfalling.16.Accordingtothepassage,whenpeoplegrowfondofoneparticularbrandofaproduct,itssaleswill_____A)decreasegraduallyB)becomeunstableC)improveenormouslyD)remainatthesamelevel17.Thefirstparagraphtellsusthatamewproductis_______A)usuallyintroducedtosatisfydifferenttastesB)oftenmoreexpensivethanoldonesC)noteasilyacceptedbythepublicD)noteasilyacceptedbythepublic18.Marketersneedtoknowwhichofthefourstagesaproductisinsoasto____________A)workoutmarketingpoliciesB)increaseitspopularityC)promoteitsproductionD)speedupitslifecycle19.Theauthormentionstheexampleof“backpacks”(line4,Page,2)toshowtheimportanceof______A)increasingusageamongstudentsB)modernizingproductstyleC)pleasingtheyoungaswellastheoldD)servingbothmilitaryandcivilneeds20.Inordertorecovertheirshareoftheworldmarket, tomakersare______A)improvingproductqualityB)modernizingproductstyleC)re-positioningtheirproductinthemarketD)increasingproductfeatures
回答：16.C
17.C.D这两项给的答案一样
18.B
19.B
20.A