第14题: [单项选择]The passage mainly discusses ______. A. two different societies B. the necessity of social change C. certain factors that determine the ease with which social changes occur D. certain factors that promote social change 参考答案:C 答案解析:判断中心思想题。文章每段首句先点明在什么样的社会中“social change is more likely to occur”(第一、二段)，“social change is easier”(第三
