学好功课的关键（jiàn），是听好课。要听好课，首先要具备三点：一是知识的准备，也就是预习。二是工具的准备，如书本、笔记本、学习文具等。三是要有充足的精力。准备做好了，怎样才能听好课呢?别急，先听我来讲个故事———古代，有两个人同时向一个下棋高手学下棋。他们 The key to learning homework is to listen to class. To listen to class, we must first have three points: First, the preparation of knowledge, that is, preview. Second, the preparation of tools, such as books, notebooks, learning stationery and so on. Third, we must have sufficient energy. Ready to do, how can we listen to class? Do not worry, listen to me tell a story --- In ancient times, two people at the same time to a chess master learn to play chess. they