对话理解：根据你所听到的对话内容，选择正确的答案回答问题。 1. Where are they possibly talking? [     ] A. At home. B. At the doctor's. C. At the shop. 2. What time did Shenzhou Ⅵ land on the earth? [     ] A. At half past four. B. At a quarter to five. C. At twenty-seven to five. 3. What makes Jason bored and tired? [     ] A. Polluted air. B. His illness. C. Noise. 4. What dose Li Ming think of English? [     ] A. Interesting. B. Useful. C. Important. 5. What kind of factory pours the waste into the river? [     ] A. Machine factory. B. Paper factory. C. Chemical factory. 6. What are they talking about? [     ] A. They are talking about the great inventors in the world. B. They are talking about the great inventions in China. C. They are talking about the Four Great Inventions (四大发明) in China.