第16题: [单项选择]Passage Two Questions 29 to 31 are based on the passage you have just heard. A. Couples living together. B. Gay couples. C. The divorced. D. The widowed. 参考答案:D 答案解析:[听力原文] Which one of the following types is included in Farr’s categories [答案详解] 细节辨认题【考频: