【正确答案】 A

【答案解析】[听力原文]31-34 　　If you are like most people, your intelligence varies from season to season. You are probably a lot sharper in the spring than you are at any other time of the year. A noted scientist, Ellsworth Huntington, concluded from other men's work and his own among peoples in different climates that climate and temperature have a definite effect on our mental abilities. 　　He found that cool weather is much more favorable for creative thinking than is summer heat. This does not mean that all people are less intelligent in the summer than they are during the rest of the year. It does mean, however, that the mental abilities of large numbers of people tend to be lowest in the summer. 　　Spring appears to be the best period of the year for thinking. One reason may be that in the spring man's mental abilities are affected by the same factors that bring about great changes in all nature. 　　Fall is the next-best season, then winter. As for summer, it seems to be a good time to take a long vacation from thinking! 31. What did Ellsworth Huntington say about "climate and temperature" ? [试题分析]本题考查考生对词义的理解。 [关键词句]have a definite effect on our mental abilities [详细解答]“have a definite effect on”意为“对…有肯定的作用”，而“mental abilities”即“智力(intelligence)”，故本题选A。

【正确答案】 B

【答案解析】[听力原文] What are the best seasons for thinking? [试题分析]本题考查考生对细节的理解。 [关键词句]cool weather is much more favorable… [详细解答]Ellsworth发现，cool weather更有利于人的创造性思维，故本题选B。

【正确答案】 D

【答案解析】[听力原文] Why is spring the best season for thinking? [试题分析]本题考查考生对某现象产生原因的分析能力。 [关键词句]affected by the same factors that bring about great changes in all nature [详细解答]本题答案其实根据常识便可得出，从上面的关键句子，也可知道：春天是万物复苏的季节，大自然的一切都在变化。故本题选D。

【正确答案】 A

【答案解析】[听力原文] What's the subject of the passage you've just heard? [试题分析]本题考查考生对全文中心大意的把握。 [关键词句]…intelligence varies from season to season…．Climate and temperature have a definite effect on our mental abilities [详细解答]本文第一句话很重要，道出了全文的内容，且贯穿全文的字便是几个season和thinking等．故本文讲的是气候与智力的关系，A为正确答案。