第4题: [单项选择]Passage Three Questions 32 to 35 are based on the conversation you have just heard. A. Her happiness to be alive. B. Her happiness to be close to nature. C. Her optimism about how much knowledge she can gain. D. Her optimism about the future of mankind. 参考答案:D 答案解析:[听力原文] 32-35 (32) I am optimistic by nature. I am glad that I am alive. I am glad that I am l