精选优质文档-倾情为你奉上教学课件专题十四科普知识类阅读+完形填空+短文改错.阅读理解A(2018吉林长春二模)Sleep repairs the body and the mind and helps prevent disease by strengthening the immune system.However,many adults do not get eight hours of sleep each night.The average sleep time an adult today gets is only 6.4 hours.Only in recent years have health professionals begun to realize the seriousness of sleep deprivation in the working population.A significant number of people work at night,work long hours,or suffer from sl
