第31题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. That they were in infinite. B. That they should be carefully conserved. C. That they were declining. D. That they were limited. 参考答案:A 答案解析: [听力原文]26-28 In the 19th century it was common to
hear people in Europe and Am