| Does an unborn baby know his mother’s
voice Psychology professor Anthony DeCasper advised an ingenious experiment to
find out. He placed padded earphones over a newborn’s ears and gave him a bottle
nipple attached to a closed rubber tube. Changes in pressure in the tube
switched channels on a tape recorder. If the baby paused extra long between
bursts of sucking, he heard on channel; if he paused shorter than average, he
heard the other. The baby now had the ability, in effect, to change
channels. DeCasper found that newborns choose the recording of their mother’s voice over that of another woman’s. The baby, however, has no innate interest in his father’s voice, which is heard in the womb only from time to time, while the mother’s voice is ever present. Within two weeks after birth, however, the baby can recognize Dad’s voice t A. An unborn, baby can occasionally hear his father’s voice. B. De Casper’s approach proved absolutely effective in a French experiment. C. An unborn baby is able to identify the tone and rhythm of his native language. D. Parents are able to soothe a fussy newly-born baby. [填空题]If we had had his telephone number, we (call) ______ him.
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