影响健康

由于智能手机的普及，不管人们在做什么他们几乎所有的时间都在使用手机。很多人养成睡觉的时候把手机放在身旁的习惯，因为他们喜欢在睡觉之前玩一下手机。有传言声称把手机放身旁会导致癌症，但是并没有直接的证据说明这一推断。

Recently, the haze weather has increasingly been serious and this phenomenon triggers the widespread concern towards air quality. In my view of the point, the best way to improve air quality is to tax

Write at least 60 words according to the given topic Computer games and our eyesight （ 以 电脑游戏与我们的视力 为题写话，词数不少于60个，标点符号不占格） How do students like playing computer games in your class? Is it good or bad