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Adults are getting smarter about how smart babies are. Not long ago, researchers learned that 4 day-olds could understand（1）and subtraction. Now, British research（2）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（3）the names of objects that were foreign to them, a result that（4）in some ways the received（5）that, apart from learning to（6）things common to their daily lives, children don’t begin to build vocabulary until well into their second year. "It’s no（7）that children learn words, but She words they tend to know are words linked to（8）.situations in the home," explains Sehafer. "（9）with an unfamiliar voice giving instructions in an unfamiliar setting." Figuring out how humans acquire language may shed light’ on why some children learn to read and write later than others, Schafer says, and could lead