【正确答案】 A

【答案解析】[听力原文]23-25
W: Dr. Jolly, I like to know the purpose of today's discussion?
M: I want the parents to know a great deal about bringing up children.
W: How will this be achieved? By encouraging parents to watch their children and how they respond day by day?
M: So often a mother is liable to feel "He's playing quietly on his own. I can get on with my work," and so she's not with her child. The result is that the child very quickly becomes bored, playing on his own. Mothers need to know that, although they shouldn't necessarily be doing anything, they need to be with their child because this encourages him whether he's painting or whether he's making things or whatever it may be. If a mother is, say, working in the kitchen, her child wants her and just quietly calls to Mummy, but she doesn't respond until he shouts. So in effect, she's said to him "Unless you shout at me, I won't come." And then she comes to me and says "I've got a child who's always shouting." You find that in effect she's trained him to shout.