一个孩子读了牛顿发现地心引力的故事,就跑去坐在苹果树下,想:自己说不定也可以发现什么大的道理。他坐在苹果树下胡思乱想:为什么苹果树这么高大,长出这么小的苹果,大西瓜却是长在小小的西瓜藤上?小苹果长在大树上,大西瓜却长在小小的藤上,这里面一定有什么伟大的道理吧!正在苦思的时候,一个苹果啪的一声落在他的头上,他突然欣喜若狂地发现了:还好,是一个苹果,如果是大西 When a child read the story of Newton’s discovery of gravity, he ran and sat under the apple tree, thinking, perhaps, what big truth he could find. He sat under the apple tree cranky: why the apple tree is so tall, grow such a small apple, watermelon is growing in the little watermelon vine? Small apples grow on the tree, the watermelon is growing in the small On the vine, there must be some great truth in it! While trying hard, an apple snapped on his head. Suddenly he found out with ecstasy: Fortunately, it was an apple. If it was a big west