题目内容：
Questionsarebasedonthefollowingpassage: Themarketinvestigationisindispensabletosalespromotion．Theyarecloselyrelatedasthelipsandteeth,sotospeak．Whatyouproduceisforsaleonthemarket．Itwouldbeimpossibletosucceedinsellingaproductwithoutfirstinvestigatingthemarket．
Intheinternationalmarket,goodsonsalecomingfromdifferentcountriesandsuppliersarealwaysfacingkeencompetition．Undersuchcircumstances,theywilltryeverythingpossibletofamiliarizethemselveswiththemarketconditions．Inmakinginvestigations,weoughttogetinformationaboutwhatsimilaritemsthecompetitorsareofferingonthemarket,whatpricestheyarequoting(报价),whatfeaturestheirproductshave,whoaretheirregularcustomers,etc．Then,howcanweobtainsuchinformation?Therearemanychannelsthatweeanmakeuseofindoingthissortofwork．Thecommercialcounselor'sofficesofourembassiesstationedabroadcanhelpusinmakingmarketinvestigations．
Nowadays,ourimportandexportcorporationssendtheirtradegroupsabroadeverynowandthen．Oneoftheirpurposesistomakemarketsurveysonthespot．
Certainly,face-to-facetalkswithforeignbusinessmenarealsoimportantchannelstogetmarketinformation．TheChineseExportCommoditiesFairsandsomeotherfairsofsimilarnatureaswellasvisitsofforeignbusinessmenprovideuswithsuchopportunities．Ofcourse,therearesomeotherwaysofmakingmarketinvestigations．
Inmakingmarketinvestigation,oneshould（ ）． A．getenoughinformationConcerned
B．advertisehisproducts
C．producehighqualitygoods
D．noneoftheabove
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答案解析：