你敢爬梯子吗?很多小朋友一定会理直气壮地说:“敢呀!小小的梯子谁不敢爬?”可是你相信吗?航天英雄杨利伟叔叔像你们这么大的时候不敢爬梯子。杨利伟叔叔8岁那年的一天,父亲让他到房顶上拿地瓜,可站在木梯跟前,他只觉得两腿发软,始终没有勇气爬上去。为了改变小利伟胆小的性格,父亲便有意识地锻炼他。寒假,带他去爬山;暑 Do you dare to climb the ladder? Many children will confidently say: “Dare! Little ladder who can not climb?” But you believe it? Space hero Uncle Yang Liwei did not dare climb the ladder when you are so big. Uncle Yang Liwei 8 years old that day, my father let him go to the roof to take sweet potatoes, you can stand in front of the wooden ladder, he felt his legs soft and always had no courage to climb up. In order to change Little Levi's timid personality, his father consciously exercise him. Winter vacation, take him to the mountain; summer