第6题: [单项选择]{{B}} Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. From three to five months. B. Three months. C. Five months. D. Four months. 参考答案:A 答案解析:[听力原文]26-28
A guide dog is a dog especially trained to guide a blind person. Dogs chosen for suc