(     ) 1. A.The Changjiang River.         B. The Yellow River.                C. The Colorado River.

(     ) 2. A. Yes, I did .                        B. Yes, I have.                         C. Yes, I am.

(     ) 3. A. Writer.                              B. His educational thoughts.     C. All over the world.

(     ) 4. A.Why? I can’t.                     B. Of course, what shall I do?  C.Ask Li Ping.

(     ) 5. A.New York.                         B. Edison.                              C.Beijing.