1 . 请根据上下文内容，将文中划线部分译成汉语或者英语。

    1     Too much TV-watching can harm children’s ability to learn and even reduce their chances of getting a college degree, new studies suggest in the latest effort to examine the effects of television on children.

One of the studies looked at nearly 400 northern California third-graders.Those with TVs in their bedrooms scored about eight points lower on math and language arts tests than children without bedroom TVs.

A second study, looking at nearly 1,000 grown-ups in New Zealand,found lower education levels among 26-year-olds who had watched lots of TV during childhood.     2     但研究结果并不能证明电视是其原因 and don’t rule out that already poorly motivated youngsters(年轻人) may watch lots of TV.

    3     Their study measured the TV habits of 26-year-olds between ages 5 and 15. Those with college degrees had watched an average of less than two hours of TV per weeknight during childhood, compared with an average of more than 2½ hours for those who had no education beyond high school.

In the California study, children with TVs in their rooms but no computer at home scored the lowest,     4     而那些没有卧室电视但有家用电脑的人得分最高。

While this study does not prove that bedroom TV sets caused the lower scores,     5     it adds to accumulating findings that children shouldn’t have TVs in their bedrooms.