写作素材：先天or后天？.

　　Nature or Nurture

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　　1. Learning is very important in determining who we are.

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　　2. You can’t change your genes, but you can choose how to live your life.

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　　3. If we take identical twins, and give one the best environment possible, and put the other one in closet for eighteen years, the differences will be profound , and caused totally by environmental differences between the two children,

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　　4. Identical twins living in parallel universes do not necessarily lead identical lives.

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　　5. Environment is more influential.

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　　6. There is also substantial proof that an individual’s environment affects his mental aptitude.

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　　7. It is often difficult to separate learning from our biology because we begin learning at the moment we are born.

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　　8. Biology certainly determines part of what we are, but we start learning as soon as we are conceived.

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　　9. We hardly separate biologically determined behavior from learned behavior.

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　　10. Socialization is learning. Socialization rers to all learning regardless of setting or age of the individual.

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　　11. A person’s entire environment seems to be more fectual in determining his mental ability than heredity is.

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　　12. Experiments such as these ones prove that a person’s environment can have a crucial fect on him and on his manner of thinking.

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　　13. A study done in Great Britain in the late 1980s shows that nutrition plays a very large role in a person’s development.

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　　14. Starving people across the globe show why lack of nutrients in human bodies can stunt mental evolutions as well as physical growth.

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　　15. Unique environmental factors (unique to children reared together) cause differences in behavior.

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