第5题: [单项选择]{{B}} Passage one
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. control of natural hazards B. control of heavy traffic C. control of heart disease D. control of man-made hazards 参考答案:D 答案解析:[听力原文]
For the 1st time, what does the problem of man’s survival have to do with
[详细解答] 只要听到此句,