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  3. The most convincing evidence for the importance of adult influence on a chil

The most convincing evidence for the importance of adult influence on a chil

游客2025-04-12  18
问题     The most convincing evidence for the importance of adult influence on a child’s intelligence comes from a study of "at risk"children. Ramey and Frances Campbell of the University of North Carolina【C1】______with children born into poverty-line households. The children entered the study by four months【C2】______age. During the study, one group spent the day in a center where teachers used games and songs to【C3】______the infants. Another group had no such【C4】______, but they were given nutritional supplements in【C5】______.
    During preschool years the children in the early-education group showed IQ advantages of ten to 20 points. The highest-risk children showed the【C6】______gains,and at age 15 they had higher reading and math scores.
    What【C7】______for these gains? Ramey and other scientists say early childhood experiences【C8】______brain growth.
    An infant is born【C9】______billions of brain cells called neurons. Some are wired to other cells before birth to regulate the【C10】______of life,such as heartbeat and breathing. Others are waiting to be wired to【C11】______him or her interpret and respond to the outside world. Experience dictates the hookups. As the child【C12】______, cells reach out and set up pathways to other cells needed to determine a【C13】______. For instance,the neurons in the eye send branches to the【C14】______cortex,which interprets【C15】______eye sees and,via other branches,【C16】______the person to react to what is seen. Each time an experience is repeated, the【C17】______are strengthened.
    The first two years of life are an explosion of brain【C18】______and connections. By age two the【C19】______has more than 300 trillion connections. At the same time,cells that aren’t being connected or used are being【C20】______. [br] 【C6】
选项 A、earliest
B、greatest
C、fewest
D、latest
答案 C
解析 四个选项的意思分别是earliest“最早”；greatest“最大”；fewest“最少”；latest“最晚，最新”。根据前文，highest-risk儿童IQ领先20多分，此处所填之词应试表积极意义，四个选项中只有C选项符合原文的意思。
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