题目

消费者与生产者之间的关系主要是（    ）   A、相互利用的关系             B、捕食与被捕食的关系 C、相互竞争的关系             D、互惠互利的关系 答案：B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.