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  3. A subject which seems to have been insufficiently studied by doctors and psychologists is the influence of geography and climate

A subject which seems to have been insufficiently studied by doctors and psychologists is the influence of geography and climate

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问题     A subject which seems to have been insufficiently studied by doctors and psychologists is the influence of geography and climate on the psychological and physical health of mankind. There seems no doubt【C1】______the general character of the landscape, the relative【C2】______of day and night, and the climate must【C3】______play a big part in determining what kind of people we are.
    It is true that【C4】______studies have been made. 【C5】______all the inhabitants of a particular area enjoy exceptionally good or bad health, scientists have【C6】______contributory factors such as the presence or【C7】______of substances like iodine, fluoride, calcium, or iron in the water supply, or perhaps types of land that provide breeding places【C8】______pests like mosquitoes or rats.
    【C9】______we can all generalize about types of people we have met. Those【C10】______in countries with long dark winters are【C11】______to be less talkative and less vivacious than inhabitants of countries where the【C12】______is more equable. And where the olive and the orange grow, the【C13】______are cheerful, talkative, and spontaneous.
    But these【C14】______generalizations are inadequate: the【C15】_________of climate and geography should be studied in【C16】______Do all mountain dwellers live to a ripe old age? Does the drinking of wine,【C17】______than beer, result in a sunny and open temperament? Is the strength and height of one of the Kenyan tribes due to their【C18】______drinking of the blood of cows?
    We are not yet sure of the answer to such questions, but let us【C19】______that something of benefit to mankind may eventually result【C20】______such studies.
【C2】
选项 A、time
B、length
C、span
D、extension
答案B
解析 名词辨析题。根据上下文，此处的意思是“昼夜的相对长短”，time是“时间，时刻”，length是“长度，距离”，span是“一段时间，跨度”，extension是“伸展，延伸”，故用length。
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