第18题: [单项选择]{{I}}Questions 14—17 are based on the following dialogue.{{/I}}According to the Authority, which of the following must the house be built of sometimes A. Stone. B. Brick. C. Cement. D. Wood. 参考答案:A 答案解析:[听力原文] 14-17
W: Good morning,Mr. Tim. It’s a long time since I had the pleasure of avisit from you.