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  3. People have wondered for a long time how their personalities and behaviors are formed. It’s not easy to explain why one person i

People have wondered for a long time how their personalities and behaviors are formed. It’s not easy to explain why one person i

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问题     People have wondered for a long time how their personalities and behaviors are formed. It’s not easy to explain why one person is intelligent and another is not, or why one is cooperative and another is competitive.
    Social scientists are, of course, extremely interested in these types of question. They want to explain why we possess certain characteristics and exhibit certain behaviors. There are no clear answers yet, but two distinct schools of thought on the matter have developed. As one might expect, the two approaches are very different from one another, and there is a great deal of debate between proponents of each theory. The controversy is often conveniently referred to as "nature/nurture".
    Those who support the "nature" side of the conflict believe that our personalities and behavior patterns are largely determined by biological and genetic factor.
    That our environment has little, if anything to do with our abilities, characteristics, and behavior is central to this theory. Taken to an extreme, this theory maintains that our behavior is predetermined to such a great degree that we are almost completely governed by our instincts.
    Proponents of the "nurture" theory, or, as they are often called, behaviorists, claim that our environment is more important than our biologically based instincts in determining how we will act Behaviorists see humans as being whose behavior is almost completely shaped by their surroundings. Their view of the human being is quite mechanistic; they maintain that, like machines, humans respond to environmental stimuli as the basis of their behavior.
    The social and political implications of these two theories are profound. In the United States, for example, blacks often score below whites on standardized intelligent test This leads some "nature" proponents to conclude that blacks are genetically inferior to whites. Behaviorists, in contrast, say that the differences in scores are due to the fact that blacks are often deprived of many of the educational and other environmental advantages that white enjoy, and that, as a result, they do not develop the same responses that whites do.
    Neither of these theories can yet fully explain human behavior. In fact, it is quite likely that the key to our behavior lies somewhere between these two extremes.
    That the controversy will continue for a long time is certain.
The author is mainly concerned about solving the problem______.
选项 A、why one’s behaviors differ from others’
B、what makes different stages of intelligence
C、how social scientists form different theories
D、what causes the "nature/nurture" controversy
答案A
解析 原文开头两段指出作者要讨论的问题，第2段末开始从两个方面解释该问题，末段是总结段。从文章的结构可见文章要探讨的是人类行为如何形成。从选项来看，似乎没有一个表达此意，但首段末句和第2段第2句中的why…从句表明how(怎样形成)和why(为什么不同)其实是对文章关注的问题的两个不同表述，故选A。
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