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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2025-03-31  0
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 10 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] 【C8】
选项 A、involve
B、delay
C、retard
D、foster
答案 D
解析 四个选项的意思分别是：involve涉及；delay延迟；retard阻止，妨碍；foster助长，促进。本句的意思是：儿童早期的经历会促进大脑的发育。根据句意，可以推出正确答案是D选项。
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