2. 外语
  3. Adults are getting smarter about how smart babies are. Not long ago, researchers learned that 4-day-old could understand【B1】____

Adults are getting smarter about how smart babies are. Not long ago, researchers learned that 4-day-old could understand【B1】____

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问题     Adults are getting smarter about how smart babies are. Not long ago, researchers learned that 4-day-old could understand【B1】______and subtraction. Now, British research psychologist Graham Schafer has discovered that infants can learn words for uncommon things long before they can speak. He found that 9-month-old infants could be taught, through repeated show-and-tell, to【B2】______the names of objects that were foreign to them, a result that【B3】______in some ways the received wisdom that, apart from learning to【B4】______things common to their daily lives, children don’t begin to build vocabulary until well into their second year. "It’s no【B5】______that children learn words, but the words they tend to know are words linked to【B6】______situations in the home," explains Schafer. "This is the first demonstration that we can choose what words the children will learn and that they can respond to them with an unfamiliar voice【B7】______in an unfamiliar setting."
    Figuring out how humans acquire language may【B8】_______ why some children learn to read and write later than others, Schafer says, and could lead to better treatments for developmental problems. What’s more, the study of language【B9】______offers direct insight into how humans learn. "Language is a test case for human cognitive development," says Schafer. But parents eager to teach their infants should take note: even without being taught new words, a control group【B10】______the other infants within a few months. "This is not about advancing development," he says. "It’s just about what children can do at an earlier age than what educators have often thought. "
【B1】
选项
答案addition
解析 并列关系题。此处应填入名词与subtraction并列，作understand的宾语。由空格后的subtraction“减法”可推测所填词意思可能与之相反。结合录音可填入addition，意为“加法”。
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