2014
高考英语专题（16）阅读理解（1）（答案）第二部分 阅读理解专题十六 事实细节 passage 1(2013•浙江，a) no one knows for sure when advertising first started.it is possible that it grew out of the discovery that some people did certain kinds of work better than others did them.that led to the concept of specialization
