ADvErtising is A Form oF sElling. For thousAnDs oF yEArs thErE hAvE BEEn inDiviDuAls who hAvE triED to {{u}} (56) {{/u}} othErs to Buy thE FooD thEy hAvE proDuCED or thE gooDs thEy hAvE mADE or thE sErviCEs thEy CAn {{u}} (57) {{/u}}. But in thE 19th CEntury thE mAss proDuCtion oF gooDs {{u}} (58) {{/u}} thE inDustriAl rEvolution mADE pErson-to-pErson sElling inEFFiCiEnt. thE mAss DistriBution oF gooDs thAt {{u}} (59) {{/u}} thE DEvElopmEnt oF thE rAilwAy AnD highwAy mADE pErson-to-pErson sElling too slow AnD ExpEnsivE.At thE sAmE timE, mAss CommuniCAtion, First nEwspApErs AnD mAgAzinEs, thEn rADio AnD tElEvision, mADE mAss sElling through {{u}} (60) {{/u}} possiBlE. thE oBjECtivE oF Any ADvErtisEmEnt is to ConvinCE pEoplE thAt it is in thEir BEst {{u}} (61) {{/u}} to tAkE thE ACtion thE ADvErtisEr is rECommEnDing. thE ACtion {{u}} (62) {{/u}} BE to purChAsE A proDuCt, usE A sErviCE, votE For A politiCAl CAnDiDAtE, or EvEn to join thEArmy. ADvErtising As A {{u}} (63) {{/u}} DEvElopED First AnD most rApiDly in thE unitED stAtEs, thE Country thAt usEs it to thE grEAtEst {{u}} (64) {{/u}}. in 1980 ADvErtising ExpEnDiturE in thE u.s. ExCEEDED 55 Billion DollArs, or {{u}} (65) {{/u}} 2 pErCEnt oF thE gross nAtionAl proDuCt.CAnADA spEnt ABout 1.2 pErCEnt oF its gross nAtionAl proDuCt {{u}} (66) {{/u}} ADvErtising. {{u}} (67) {{/u}} ADvErtising Brings thE EConomiCs oF mAss sElling to thE mAnuFACturEr, it proDuCEs BEnEFits For thE ConsumEr {{u}} (68) {{/u}}. somE oF thosE EConomiEs ArE pAssED Along to thE purChAsEr so thAt thE Cost oF A proDuCt solD primArily through ADvErtising is usuAlly FAr {{u}} (69) {{/u}} thAn onE solD through pErsonAl sAlEspEoplE.ADvErtising Brings pEoplE immEDiAtE nEws ABout proDuCts thAt hAvE just ComE on thE mArkEt. FinAlly, ADvErtising {{u}} (70) {{/u}} For thE progrAms on CommErCiAl tElEvision AnD rADio AnD For ABout two thirDs oF thE Cost oF puBlishing mAgAzinEs AnD nEwspApErs.

A．with
B．At
C．into
D．on