单项选择题

Questions 14-17 are based on a talk between a student and his advisor
What causes eye problem when using a computer

A．Blinking eyes less．
B．Using fewer eye-drops．
C．Moving eyeballs fast．
D．Concentrating on work．

<上一题目录下一题>

热门试题

单项选择题

单项选择题

Questions 14-17 are based on a talk between a student and his advisor What causes eye problem when using a computer 您的浏览器不支持 audio 元素。