| 听材料，回答问题。 |
| 1. Obama visited China for _______ in November, 2009. |
| A. four days B. four weeks C. 50 minutes |
| 2. Obama visited the Forbidden City and the Great Wall _______. |
| A. to show respect to China's culture B. to relax himself C. A and B |
| 3. Obama said the Great Wall could remind him of _______. |
| A. the stories of the Great Wall B. the long history of China C. many historical places in China |