预习2.2

Chapter Two   Government and Politics

Before going into this chapter, try to get some information about the following items from

1.语料库——美国总统；

2.视频库——美国大选；

3.精品课程——America: Political System

1. Principles of the government

2. Checks and balances

3. How to elect a president

4. How do the three branches check each other