阅读理解 A subject that seems to have been insufficiently studied by doctors and psychologists is the influence of geography and climate on the psychological and physical health of humankind. There seems no doubt that the general character of landscape, the relative length of day and night, and climate must all play a part in determining what kind of people we are.
It is true that a few studies have been made. Where all the inhabitants of a particular area enjoy exceptionally good or bad health, scientists have identified contributory factors such as the presence or absence of substances like iodine, fluoride, calcium, or iron in the water supply, or perhaps types of land that provide breeding places for pests like mosquitoes or rats.
Moreover, we can all generalize about types of people we have met. Those living in countries with long dark winters are apt to be less talkative and less lively than inhabitants of countries where the climate is more equable. And where olives and oranges grow, the inhabitants are cheerful, talkative, and casual.
But these commonplace generalizations are inadequate: the influence of climate and geography should be studied in depth. Do all mountain dwellers live to a ripe old age? Does the drinking of wine, rather than beer, result in a sunny and open character? Is the strength and height of a Kenyan tribe due to their habitual drinking of the cow blood?
We are not yet sure of the answers to such questions, but let us hope that something beneficial to humankind may eventually result from such studies.

单选题 6.The passage mainly discusses______.

单选题 7.We may infer that " iodine, fluoride, calcium... "(Para. 2)are______.

单选题 8.From Paragraph 3 we know that geography and climate play an important role in determining the inhabitants' ______.

【正确答案】 C

【答案解析】第三段第二句提到“Those living in countries with long dark winters are apt to be less talkative and less lively than inhabitants of countries where the climate is more equable．”居住在冬季时间很长的国家的人们会更显得不善言谈，且缺乏活力。可见，地理条件会决定居民的性格，所有居民的性格趋向即表现为一种社会习俗。

单选题 9.According to the author, research into the influence of geography and climate should

【正确答案】 D

【答案解析】倒数第二段第一句提到“But these commonplace generalizations are inadequate：the influ—ence of climate and geography should be studied in depth．”可见，作者认为这些普遍的概括是不够的，气候和地理条件的影响还有待进一步地深层次研究。