Thepassageismainlyabout______.
A.howtomakeawisebuyingdecision
B.waystoprotecttheinterestsoftheconsumer
C.thepositiveandnegativeaspectsofadvertising
D.thefunctionofadvertisementsinpromotingsales
正确答案:C[解析]文章第一句话已点题,广告的积极(positive)和消极(negative)因素。

Thepassageismainlyabout______.
A.howtomakeawisebuyingdecision
B.waystoprotecttheinterestsoftheconsumer
C.thepositiveandnegativeaspectsofadvertising
D.thefunctionofadvertisementsinpromotingsales
正确答案:C