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A、They counted the number of pencils of each color. B、They guessed at the total number of pencils. C、They counted only the penci
A、They counted the number of pencils of each color. B、They guessed at the total number of pencils. C、They counted only the penci
admin
2006-11-10
40
问题
People appear to be born to compute. The numerical skills of children develop so early and so inexorably that it is easy to imagine an internal clock of mathematical maturity guiding their growth. Not long after learning to walk and talk, they can set the table with impressive accuracy—one plate, one knife, one spoon, one fork, for each of the five chairs. Soon they are capable of noting that they have placed five knives, spoons, and forks on the table and, a bit later, that this amounts to fifteen pieces of silverware. Having thus mastered addition, they move on to subtraction. It seems almost reasonable to expect that if a child were secluded on a desert island at birth and retrieved seven years later, he or she could enter a second-grade mathematics class without any serious problems of intellectual adjustment.
Of course, the truth is not so simple. This century, the work of cognitive psychologists has illuminated the subtle forms of daily learning on which intellectual progress depends. Children were observed as they slowly grasped—or, as the case might be encountered—concepts that adults take for granted, as they refused, for instance, to concede that quantity is unchanged as water pours from a short stout glass into a tall thin one. Psychologists have since demonstrated that young children, asked to count the pencils in a pile, readily report the number of blue or red pencils, but must be coaxed into finding the total. Such studies have suggested that the rudiments of mathematics are mastered gradually, and with effort, They have also suggested that the very concept of abstract numbers—the idea of a oneness, a twoness, a threeness that applies to any class of objects and is a prerequisite for doing anything more mathematically demanding than setting a table—is itself far from innate.
选项
A、They counted the number of pencils of each color.
B、They guessed at the total number of pencils.
C、They counted only the pencils of their favorite color.
D、They subtracted the number of red pencils from the number of blue pencils.
答案
A
解析
根据题干线索找寻到原文第二段第四句可知当被要求数红、蓝铅笔时,孩子们会“report the number of blue or red pencils, but must be coaxed into finding the total”,即“他们会将红、蓝铅笔分开来数,只有经过诱导,他们才会将这些铅笔的总数数出来”。因此,选项a的说法与原文相符。
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