(B)

　　When children learn a language, they learn the grammar as well as the words or vocabulary. No one teaches them, and children just "pick them up". Before babies begin to produce words, they produce sounds. Some of these sounds will remain if they occur in the language being acquired, and others will disappear. This is called the "babbling(矛语)  stage. "

　　A child does not learn the language " all at once". The children first utterances are one--word sentences. After a few months, the two--word stage happens. During this stage, the child puts two words together. These two--word sentences have definite patterns and express grammatical and meaningful relationships. Still later, in the telegraphic stage, the child will produce longer sentences. These longer sentences are mainly made up of content words. T. he children's early grammar, but at last it will become better.

　　All normal children everywhere can learn the language. This ability is not dependent on race, social class, geography, or even intelligence(智力) . This ability is uniquely human.

　　(      )6. This passage is mainly about ________.

　　A. the difference between a child's language and an adult's

　　B. ways of teaching babies to talk

　　C. children's learning of the mother language

　　D. the importance of learning foreign languages

　　(      )7. The phrase"pick them up"in the first paragraph means "________".

　　A. raise them from the ground

　　B. learn them without much effort

　　C. use hands to help carry them

　　D. study very hard and remember them

　　(      )8. During the "babbling stage" , babies ________.

　　A. can only produce sounds

　　B. learn to walk steadily

　　C. can understand people's talk

　　D. begin to produce two--word sentences

　　(      )9. The two--word sentences produced by babies ________.

　　A. are simpler than those produced in the "babbling stage"

　　B. are more difficult than those produced in the telegraphic stage

　　C. are strictly grammatical

　　D. are meaningful and have functions

　　(      )10. Any child can learn the language as long as he is ________.

　　A. well-educated     B. clever enough  C. unique      D. physically normal