单选题
It can be inferred from the passage that when a 7-month baby calls his or her mother "mama" ______.
A、
he probably has known that mother should be called in this way
B、
he probably does not know the sound stands for ,'mother"
C、
he probably has already known the meaning of mama
D、
it is the first meaningful sound pronounced by him
【正确答案】
B
【答案解析】
[解析] 推理判断题。文章第三段最后一句说一个七个月大的婴儿可能用“妈妈”来指他的爸爸，他的狗，或者任何他喜欢的其他东西，由此可以推断他很可能不知道他这个声音指代的是“母亲”，因此答案选[B]。
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