C

If you want to help children develop language and speech skills，UCLA researchers say，listening to what they have to say is just as important as talking to them.

The effect of a conversation between a child and an adult is abou t six times as great as the effect of adult speech input (输入) alone，the researchers found.“Adults speaking to children helps language develop，but what matters much more is the interaction，”said the study’s lead author，Frederick Zimmerman，an associate professor in the School of Public Health at the University of California，Los Angeles.The researchers also found that TV viewing didn’t have much of an effect-positively or negatively-as long as it wasn’t displacing conversations between an adult and a child.

The UCLA study included 275 families with children between 2 months and 48 months old.They represented a variety of incomes and education.The researchers found that， in an average day，children hear about 13,000 spoken words from adults and participated in about 400 adult-child conversations a day.

Assessed separately，factors po sitively associated with language development included each additional 100 conversations a day and each 1,000 word increase in the number of words spoken by adults and heard by children.When looked at alone，TV was negatively associated with language development.But，when the three factors were analyzed together，the only one that stood out was conversation between adults and children.

“The more a child speaks and interacts with an adult，the better idea a parent has about where the child is，” Zimmerman said.“Although it’s mostly done unconsciously，parents will provide feedback and correct mistakes.They’ll also tailor their speech to the child.Parents can give a child words by talking to them about what they’re doing，such as，“I’m putting on your pajamas now.But give your child the opportunity to talk，hopefully without the rest of the noise in the environment，”she added.“If parents can carve out some conversation time-maybe at bath time or at dinner time-that’s a wonderful thing.”

【解题导语】　研究发现，父母和孩子之间的交谈对孩子语言的发展至关重要。这种交谈必须是双向的、互动的。

64.The researchers also found that TV viewing ________.

A.could have a positive effect on a child’s language development

B.had a little effect on a child’s language development

C.affected a child’s language development more negatively than positively

D.affected a child’s language development both negatively and positively

解析：选B。细节理解题。从文章第二段最后一句可知，看电视对孩子没有多少影响，无论是积极的还是消极的。

65.Frederick Zimmerman would probably agree that ________.

A.parents should let their children talk most of the time

B.children should watch TV programs selectively

C.the conversation between parents and children should be two-way

D.it’s no good for parents to correct their children’s mistakes when they are speaking

解析：选C。推理判断题。从文章第二段内容可知，Zimmerman 强调父母跟孩子之间交谈的双向性和互动性才是更重要的。

66.We can conclude from the last paragraph that ________.

A.parents should let a child repeat what he or she says

B.bath time or dinner time is the best chance for parents to talk to a child

C.parent-child conversation can be carried out at any proper time

D.parents should leave a child talking alone

解析：选C。推理判断题。从文章最后一段可知，父母应该随时创造跟孩子交谈的机会，时间的选择是非常灵活的。

67.What would be the best title for the passage?

A.Talk with kids，not at them

B.Let your children voice their own opinions

C.How to develop a child’s language ability

D.The importance of early child language development

解析：选A。主旨大意题。根据文章内容分析，文章强调父母和孩子之间的交流，而且强调交流的互动性，因此A项符合文章的主旨，适合作本文标题。