单选题：C　　Too much TV-watching can harm children’s ability to learn

C 　　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 400northern 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 1000 grown-ups in New Zealand,found lower education levels among 26-year –olds who had watched lots of TV during childhood .But the results don’t prove that TV is the cause and don't ride out that alxeady poorly motivated youngstersC年轻人）may wash lots of TV.
　　Their study measured the TV habits of 26-year-olds between ages5 and 15. These with college degrees had watched拍average of tess than two hours ofTV per weekninght during childhood, compared with an averageofme than 2 1/2 hours fcf those wbe had no education beyond high school
　　In the California study, children with TVs in their rooms but no computer at home scored the lowest while those with no bedroom TV but who had home computers scored the highesl
　　While this study does not prove that bedroom TV sets caused the lower scores , it adds to accumulating fimiings that children shonldn't have TVs in their bedrooms A．have watched a lot of TV
B．not be interested ted in math
C．be unable to go to college
D．have had computers in their bedrooms