Most products, which this is one example, sell well, .A. of; as advertisedB. of; like adv

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(答案→)A. of; as advertised
B. of; like advertising
C. /; as an ad
D. /; like an ad
解析：考查定语从句，介词of+which=of most products，第二空填as advertised是省略式=as they are advertised，句意是：大多数产品其中这就是个例子，卖的很好，就像做的广告一样。选A。