范文:Lack of sleep refers to not reaching the normal sleep time. Lack of sleep will bring many physical and mental injuries: thinking ability will decline, vigilance and judgment will be weakened, immune func
1.初中英语作文 水污染水污染Water PollutionEverybody knows that there is serious problem of water pollution on the earth. Yes, water pollution is ! The water in the river is getting dirtier and
study,growing up and put forth some measure for amelioration of juwenile s sleep health. I hope the problem will be valued. 睡眠不足或睡眠缺失往往给人的健康造成不良影响而带来工作与生活上的问题。