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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2025-04-24  1
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 often 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 bom【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] 【C12】
选项 A、grows
B、develops
C、matures
D、raises
答案 C
解析 四个选项的意思分别是：grows生长，变成；develops发展；matures成熟； raises饲养。句子意思是“随着婴儿的成熟，其大脑在不断地发育”。所以正确答案是C 选项。
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