第19题: [单项选择]In the second paragraph "...if we take two unrelated people at random from the population" means if we ______. A. pick any two persons B. take out two different persons C. choose two persons who are relatives D. choose two persons with different intelligence 参考答案:A 答案解析:本题为细节推理题。第二段中“On the other hand”连接的是前后两个相对的概念,紧接着的后一句说选择一对双胞胎作为实验对象,由此可判断选项B,C,D在意思上和 two identical
第32题: [单项选择]What is the conversation about A. Seeing a doctor. B. Asking for a favor. C. Date-breaking. 参考答案:B 答案解析:[听力原文]15-17 W: Excuse me, Mr. Smith. M: Yes W: Could I possibly take the day off tomorrow