听对话,选择正确答案。
1. How many inventions did Edison make in his life?
A. One thousand.
B. About one thousand.
C. Over one thousand.
2. When did Edison die?
A. In 1931.
B. In 1913.
C. In 1930.
3. Why did someone suggest (建议) turning off all the lights when Edison died?
A. In memory (纪念) of him.
B. It's not talked about.
C. To save electricity.
4. How long did someone suggest turning off all the lights when Edison died?
A. For several hours.
B. For several minutes.
C. For a minute.
5. Did people really turn off all the lights when he died?
A. Yes, they did.
B. No, they didn't.
C. It's not talked about.