科研之友
微信
新浪微博
Facebook
分享链接
摘要
<正>Orville and Wilbur Wright were inventors.Their dream was to build a flying machine.As children, they liked to find out how things worked. As grownups, they worked in a bike shop.In 1900, the Wright brothers built a glider(滑翔机) with two wings. Each wing was covered with cloth.
