第一部分 阅读理解 （共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
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, which means that people would specialize, or focus, on doing one specific job.
Let’s take a man we’ll call Mr. Fielder, for example. He did everything connected with farming. He planted seeds, tended the fields, and harvested and sold his crops. At the same time, he did many other jobs on the farm. However, he didn’t make the bricks for his house, cut his trees into boards, make the plows (犁), or any of other hundreds of things a farm needs. Instead, he got them from people who specialized in doing each of those things.
