A.they are incapable of learning language rapidly

　　B.they are exposed to too much language at once

　　C.their mothers respond inadequately to their attempts to speak

　　D.their mothers are not intelligent enough to help them

　　3.What is particularly remarkable about a child is that ____.

　　A.he is born with the capacity to speak

　　B.he has a brain more complex than an animal’s

　　C.he can produce his own sentences

　　D.he owes his speech ability to good nursing

　　4.Which of the following can be inferred from the passage?

　　A.The faculty of speech is inborn in man.

　　B.The child’s brain is highly selective.

　　C.Most children learn their language in definite stages.

　　D.All the above

　　5.If a child starts to speak later than others, he will ____in future.

　　A.have a high IQ B.be less intelligent

　　C.be insensitive to verbal signals D.not necessarily be backward

　　第十六篇答案：B　C　C　D　D