单项选择题

According to the author, an unborn baby ______.

A．is unable to identify his mother' s lullaby after birth
B．is able to identify his mother' s voice rather than that of others'
C．is able to help release adrenaline and other stress-related hormones
D．is able to distinguish French accent from Russian accent
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单项选择题
The author believes that the reaction of an unborn baby to his mother' s voice
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
单项选择题
Which of the following is NOT mentioned about the unborn baby in the passage.'
A．An unborn baby can occasionally hear his father's voice.
B．DeCasper'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.
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