问答题 According to Kingsley Davis, what made migration occur?

【正确答案】Human adaptability and inter-group inequalities caused by cultural differences．

【答案解析】在第8段，Kingsley Davis提出了人类迁移的两个原因。其一是人类拥有工具和语言，能够适应不同的环境(adapt to different conditions)，而不用在原地等待自身的进化；其二是人口增加后，文化开始产生差异(cultures began to differ)，各群体间出现了不平等(inequalities developed between groups)。故答案为Humanadaptability and inter-group inequalities caused by cultural differences。

问答题 What is the role of the third and fourth paragraphs in the whole passage?

【正确答案】To expound one aspect of the preceding topic．

【答案解析】前两段提出新英格兰的雨季是旅游淡季，第2段最后两句指出旅馆采用各种方法来招徕游客：饮食、价格折扣等。这是文章的主题句。文章接着围绕该主题句对这些方面进行阐述，第3、4段介绍了饮食方面，故答案可表述为To expound one aspect of the preceding topic。

问答题 What did President Clinton try to do during his trip to Moscow?

【正确答案】To calm the market．

【答案解析】第2段首句提到克林顿总统莫斯科之行旨在尽力让市场稳定下来，故答案为To calm the market。

问答题 What does the word "slump" in the first paragraph mean?

【正确答案】Economic crisis．

【答案解析】首先可以确定recession影响了practice，而后又有“增长率出现下降”的情况，因此即使不认识slump，也可以推测它指的是“经济危机”，故答案为Economic crisis。