第7题: [单项选择]Questions 12 to 15 are based on the conversation you have just heard. A. Finding the true nature of subatomic particles. B. Their work on very high frequency radio waves. C. Laying the foundations of modem mathematics. D. Their discovery of the laws of cause and effect. 参考答案:B 答案解析:Question 14: For what were Dennis Hutton and his wife awarded the Nobel Prize a second time