[单项选择]
A few years ago a young mother watched her husband diaper(给...... 换尿布) their firstborn son. "You don’t have to be so unhappy about it," she protested. "You can talk to him and smile a little." The father, who happened to be a psychologist, answered firmly, "He has nothing to say to me, and I have nothing to say to him."
Psychologists now know how wrong that father was. From the moment of birth, a baby has a great deal to say to his parents and they to him. But a decade or so ago, these experts were describing the newborn as a primitive creature who reacted only by reflex, a helpless victim of its environment without capacity to influence it. And mothers accepted the truth. Most thought (and some still do) that a new infant could see only blurry shadows, that his other senses were undeveloped, and that all he required was nourishment, clean diapers, and a warm bassinet.
Today university laboratories across
A. he thought the baby didn't have the power of speech
B. he believed the baby was not able to hear him
C. he was a psychologist unworthy of his profession
D. he thought the baby was not capable of any response
