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Adults are getting smarter about how smart babies are. Not long ago, researchers learned that 4-day-olds could understand (36)________and subtraction. Now, British research (37)________ 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(38)________ the names of objects that were foreign to them, a result that (39)________in some ways, the received (40) ________that apart from learning to (41)________things common to their daily lives, children don’’t begin to build vocabulary until well into their second year. " It’’s no (42)________that children learn words, but the words they tend to know are words linked to (43)________situations in the home, " explains Schafer. " (44)________________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 to better treatments for developmental problems. (45)________________. " Language is a test case for human cognitive development," says Schafer. But parents eager to teach their infants should take note; (46) ________________. "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."