Section A Face to Face with Guns Section B Should I Have a Gun? Section C A Bank Robbery

Section A The Window Section B The Trashman Section C My Moveing Experience

Section A The Battle Against AIDS Section B The Last Dive at the Olympics Section C International Joint Efforts Against AIDS

Section A How to Make a Good Impression Section B Body Language Section C Gestures

Section A A Good Heart to Lean On Section B The Right Son at the Right Time Section C Love of Life

Section A A Busy Weekday Morning Section B Parent Talk Section C Teeange Talk

Section A Learning a Foreign Language Section B Keys toSuccessful Online Learning Section C Teacheing Children at Home

问题的提出必要性 通过协方差或相关系数证实变量之间存在关系,仅仅 只是知道变量之间线性相关的性质——正(负)相关 和相关程度的大小。 既然它们之间存在线性关系,接下来必须探求它们之 间关系的表现形式是什么?

第一讲 羽毛球运动特点及锻炼价值 第二讲 羽毛球运动发展概况 第三讲 羽毛球运动竞赛裁判法 第四讲 羽毛球运动基本技术 第五讲 羽毛球运动基本战术

• 蛙泳身体姿势 • 蛙泳腿部技术 • 蛙泳手臂技术 • 蛙泳配合技术