第31题: [单项选择]The purpose of this passage is______. A. to explain why people fail to act in emergencies B. to explain when people will act in emergencies C. to explain what people will do in emergencies D. to explain how people feel in emergencies 参考答案:B 答案解析:[试题分析] 文章主旨题。
[详细解答] 本文主要讲述了科学家们通过实验研究出人们在帮助别人的两个要素,同时指出,事情发生时,有多少人在场,也起决定作用。其目的就是分析在何种情况下,人们才会伸出援助