单项选择题


Questions 11 to 14 are based on the fallowing passage. At the end of the passage, you will be given 20 seconds to answer the questions.
Now listen to the passage.
The United States is a typical country

A.which encourages free trade at home and abroad.
B.where people’s chief concern is how to make money.
C.where all businesses are managed scientifically.
D.which normally works according to the federal budget.