男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

Society

80% of Chinese students sleep-deprived: report

(Xinhua)
Updated: 2011-05-30 19:42
Large Medium Small

TIANJIN - About 80 percent of China's primary and middle school students aren't getting enough sleep, according to a report released on Monday in North China's Tianjin Municipality.

The average sleeping time for China's elementary and middle school students is less than eight hours, even on weekends, according to the report released by the China Youth and Children Research Center (CYCRC).

The report was based on three surveys of more than 5,000 elementary and middle school students in ten provincial-level regions. The surveys were conducted in 1999, 2005 and 2010.

"Heavy workloads, poor study habits and long commute times have all contributed to the sleep shortage," said Deng Xiquan, a scholar who works with the CYCRC.

According to the CYCRC, elementary and middle school students should get ten and nine hours of sleep each day, respectively.

主站蜘蛛池模板: 盐山县| 唐海县| 中山市| 盐源县| 攀枝花市| 通渭县| 南华县| 绍兴市| 延长县| 肃北| 木兰县| 奉新县| 施秉县| 溆浦县| 武川县| 乌拉特后旗| 宜春市| 图们市| 卫辉市| 贵溪市| 巴塘县| 昌平区| 响水县| 临漳县| 鄂伦春自治旗| 山丹县| 衡阳县| 石河子市| 望都县| 新兴县| 依兰县| 定安县| 于都县| 和政县| 余江县| 中卫市| 日照市| 阿瓦提县| 宜宾市| 兴仁县| 明溪县|