Parents who buy children a computer to help with schoolwork could be doing more harm than good.

　　家长给孩子买电脑来完成家庭作业可能是弊大于利的。

　　Researchers warned that marks in maths and reading tended to drop when youngsters used a computer at home.

　　研究者警告说小孩子在家用电脑可能会导致数学和阅读的分数下降。