閱讀理解。
     Washington D.C. is the capital of the United States. It's the center of national government. It's a busy, working city with a large population. But what is more, Washington is also a city of history and culture. It is
  home to many famous and interesting public buildings and monuments, many of which are connected with
  the federal government.    
     Washington was created in 1790, when Congress (the highest lawmaking body of the United States)
  decided to place the nation's new capital in the east of the country. It was built half way between the
 northern and southern states of America. And of course it was named after George Washington, the first
 President of the United States.
     There are many tourist sights in Washington. Perhaps the most important tourist sight is the Capital
 Building. This is the house of the Congress. Another world-famous building in Washington is the White
 House. This is the home and office of the President of the United States. Most visitors are, however,
  surprised by how small the White House actually is.
     Washington is also a great cultural city. The Library of Congress contains one of the largest library
  collections in the world. The Smithsonian Museum holds the nation's largest collection of cultural
 materials. And the John F. Kennedy Center is a famous center of art and culture. It has many great
 musical and theatre performances throughout the year.
1. From the passage we know that Washington is situated in _____.
    A. the east, on the middle point from north to south of the country
    B. the center of the U. S. A.
    C. the east of the U. S. A.
    D. the east and halfway away from the north
2. The passage mentions _____ buildings.
    A. six    
    B. five  
    C. four      
    D. three
3. The writer introduces Washington in order of _____.
    A. population, history and culture  
    B. history and culture
    C. general introduction, history, sights and culture
    D. general introduction, history, sights, buildings and culture