NO.PZ2018062003000081
问题如下：
There are many companies in an industry, each company sell not only its own brand product, but also other brand products produced from other companies. Different brand product has different prices. The market structure of this industry is most likely to be:
选项：
A. monopoly.
B. oligopoly.
C. monopolistic competition.
解释：
C is correct.
In a market of monopolistic competition, there are a large number of independent manufacturers, each manufacturer produces the differentiated product.
考点：市场结构
解析：从题干表述可知，市场上有不少的竞争者。产品有差异化，有品牌。那么这种情况最符合垄断竞争市场的特点。
老师好，请问为什么题中要提到每家公司也会卖其他公司的产品呢？我看到这个就想到了卡特尔，就选了oligopoly，是哪里理解错了呢？