课本中的习题看似简单,其实内涵丰富.只要我们在平时学习中,对这些习题的图形或条件稍加改动,就可以发展成一个个思维含量高的新题.从这个意义上看,课本习题对强化数学基础知识、基本技能,开发智力,培养各种能力等有不可替代的作用.下面让我们看一道源于课本的有关圆的综合题. Exercises in the textbook seem simple, in fact, rich in content.As long as we learn in the usual, the exercises on the graphics or conditions a little change, you can develop into a new high-thinking topic.In this sense, the textbook Exercise to strengthen the basic knowledge of mathematics, basic skills, development of intelligence, develop a variety of capabilities have an irreplaceable role. Let us look at a text derived from the circle of comprehensive questions.