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  3. Does an unborn baby know his mother’s voice? Psychology professor Anthony DeCasper advised an ingenious experiment to find out.

Does an unborn baby know his mother’s voice? Psychology professor Anthony DeCasper advised an ingenious experiment to find out.

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问题    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 too. A newborn is even attuned to the cadence and rhythm of his native language. In a French study using a setup similar to DeCasper’s, French babies given the choice between French and Russian words responded more to the sound of French.
   Brian Satt, a research specialist in clinical psychology, has parents sing a lullaby-like "womb song" to their babies. The unborn baby often develops a specific, consistent movement pattern when its song is sung. According to Satt, most parents can calm a fussy newborn with the song most of the time, which is a prize worth more than rubies to a new parent.
   He is roused by a heavy jolt. His mother has tripped and fallen heavily on one hip. He is much too well cushioned to experience any injury, but her pain and the fear that she may have hurt him floods both their bodies with adrenaline and other stress-related hormones. He cries and kicks vigorously, a cry never heard because there is no air to make sound. As she recovers the stress hormones ebb away, and he calms down too.
The author believes that the reaction of an unborn baby to his mother’ s voice
选项 A、belongs to one of the natural tendencies
B、is an indication which shows an unborn baby can use all his senses after birth
C、is but a physiological circulation of any human being
D、is the most important factor which leads an unborn baby to the survival in the womb
答案C
解析 从第二段中作者对于婴儿对父亲的声音没有天生的兴趣的解释，即由于母亲的声音无时无刻不在那儿，和最后一段婴儿对于tress-related hormones的反映的描述来看，作者应该认为这只是一种生理现象。故答案为C。其他选项在文中都没有体现。
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