2. 外语
  3. That experiences influence subsequent behavior is evidence of an obvious but nevertheless remarkable activity called remembering

That experiences influence subsequent behavior is evidence of an obvious but nevertheless remarkable activity called remembering

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问题      That experiences influence subsequent behavior is evidence of an obvious but nevertheless remarkable activity called remembering. Learning could not occur without, the function popularly named memory. Constant practice has such an effect on memory as to lead to skilful performance on the piano, to recitation of a poem, and even to reading and understanding these words. So-called intelligent behavior demands memory, remembering being a primary requirement for reasoning. The ability to solve any problem or even to recognize that a problem exists depends on memory. Typically, the decision to cross a street is based on remembering many earlier experiences.
    Practice (or review) tends to build and maintain memory for a task or for any learned material. Over a period of no practice what has been learned tends to be forgotten; and the adaptive consequences may not seem obvious. Yet, dramatic instances of sudden forgetting can be seen to be adaptive. In this sense, the ability to forget can be interpreted to have survived through a process of natural selection in animals. Indeed, when one’s memory of an emotionally painful experience leads to serious anxiety, forgetting. may produce relief. Nevertheless, an evolutionary interpretation might make it difficult to understand how the commonly gradual process of forgetting survived natural selection.
    In thinking about the evolution of memory together with all its possible aspects, it is helpful to consider what .would happen if memories failed to fade. Forgetting clearly aids orientation in time, since old memories weaken and the new tend to stand out, providing clues for inferring duration. Without forgetting, adaptive ability would suffer, for example, learned behavior that might have been correct a decade ago may no longer be. Cases are recorded of people who (by ordinary standards) forgot so little that their everyday activities were full of confusion. This forgetting seems to serve that survival of the individual and the species.
    Another line of thought assumes a memory storage system of limited capacity that provides adaptive flexibility specifically through forgetting. In tiffs view, continual adjustments are made between learning or memory storage (input) and forgetting (output). Indeed, there is evidence that the. rate at which individuals forgets is directly related to how much they have learned. Such data offers gross support of contemporary models of memory that assume an input-output balance.  
The tone of the passage can best be described as ______ .
选项 A、hypothetical
B、humorous
C、exaggerative
D、philosophical
答案D
解析 本文客观地分析了记忆和忘却的机制的作用及其相互关系，运用了哲学中的辩证法原理，因此答案为D项。即作者站在了哲学家的角度，以客观事实为依据，论证了他的观点，故排除A项。
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