题型分类：主旨题

题干分析：讲座主旨。

原文定位：

The United States has what's called a federal government. In a federal system of government, the power to make laws and regulations is divided between a national government and smaller political units, states in this case. There are two views of how those powers should interact with one another. One view is called dual federalism. Dual federalism holds that the national and state governments both have clearly defined powers, though the national government's power is quite limited. The other perspective is cooperative federalism. Cooperative federalism asserts that the national government's power over the states is not so clearly limited, in fact, that it's not clearly defined. At times, national and state governments work together cooperatively, but the national government can also impose its power over the states.

选项分析：文章开头提到美国政府是联邦制的，而关于联邦制中国家政府和州政府的关系应该如何处理，有两种看法：一是二元联邦制，二是合作联邦制，文章其后都在谈这两种看法之间的区别，以及在历史上的变化，可知应选C选项。A选项未提及，B、D选项都只占文章的一小部分。