单选题 In the above passage, the author's main purpose is to ______.

A、 suggest consumers to buy generic items instead of fatuous brands
B、 give some pieces of advice to consumers
C、 convince readers that the advice of most mothers isn't enough for consumers these days
D、 persuade consumers not to believe the advertisements

【正确答案】 B

【答案解析】[解析] 通读全文可知，作者告诉消费者在购物时应该如何去做：何时、何地、如何挑选、如何看广告。