The water clock has three parts.On the left is a tank holding water.This tank has a narrow opening through which water drips into a second container,also a tank.Inside the second tank is a floating object,to the end of which is attached a long pole with an arrow.On the right is a cylinder with the numbers one to twelve written on it.As the water from the tank on the left drips into the second tank,the level rises and with it the lfoating object.This causes the arrow to move from one number to the next.One thus has a twelve hour clock.After twelve hours the second tank is emptied and the process is begun again.
SAT填空题词汇记忆标准
两句SAT阅读长难句语法分析
SAT阅读高分需要良好的习惯
SAT阅读考试答题方法和顺序
SAT阅读技巧之利用介词解题
一篇SAT阅读模拟练习题
SAT阅读考试高分答题原则
SAT阅读答题策略
SAT阅读填空题练习题五道
SAT阅读长期备考要读什么?
SAT填空题答题基本方法
SAT阅读考试答题步骤和技巧一个
SAT阅读题型解答方法之态度题
SAT阅读主要题型解答方法
SAT阅读文章模拟一篇
SAT阅读高分技巧之两种比喻
最根本的SAT阅读高分备考建议
SAT阅读长难句类型分析
SAT阅读题型小结
SAT阅读考试难点的备考
提高SAT阅读成绩的根本途径
SAT阅读高分技巧两个
SAT阅读考试经典错误11个
SAT阅读备考重点之掌握时间
SAT阅读填空题答题小技巧
7道SAT填空题练习题
SAT阅读填空题六道
SAT阅读文章类型总结
SAT阅读长难句分析5句
SAT阅读备考方法(超长)
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