Expert(专家)say that students usually need eight to ten hours' sleep at night, but most Chinese students do not get enough sleep. Some Chinese parents are usually glad to see their children studying late. They will think their children work very hard, but not all parents are happy about this. Once a mother told us that every morning her 10-year-old boy put up one finger(手指)with his eyes still closed, begging(请求)for one more minute to sleep. Like thousands of students "early birds" in China, he has to get up before six every morning.

    A report shows that without a good night's sleep, students seem to be weaker(虚弱)than they should be. Many students have fallen asleep(睡觉) during class at one time or another. Too much homework is not the only reason why students stay up late. Some watch TV or play the computer games late into the night.

    Experts have ever said that the students should develop good study habits. So some clever students never study late, they are able to work well in class.

水调歌头

叶梦得^①

九月望日，与客习射西园，余偶病不能射。

霜降碧天静，秋事促西风。寒声隐地，初听中夜入梧桐。起瞰高城回望，寥落关河千里，一醉与君同。叠鼓闹清晓，飞骑引雕弓。

岁将晚，客争笑，问衰翁。平生豪气安在，沈领为谁雄。何似当筵虎士，挥手弦声响处，双雁落遥空。老矣真堪愧，回首望云中^②。

【注】①叶梦得（1077-1148），宋代词人，宁少蕴。1138年再次知建康府，总管四路漕计，致力于抗金防备及军饷勤务。此词大约作于这个时期。

②云中：云中郡，汉代名将魏尚、李广都曾做过云中太守，并于此地奋勇抗击匈奴。

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