高一视频资源
《完形填空之词语辨析》麻雪玲
点击试听好老师
老师传授典型题详细办法
教学生举一反三
一题多解、一题巧解
错题本
错题追踪复习
听课中的错题能自动加入错题本
课后可方便复习及导出错题本
网络答疑
课程互动性强
在线互动问答
数理化英快速答疑
课后练习
经典例题课后练习
老师针对课堂中的经典例题
为学生推送同类型题,掌握解题方法
When young Matzeliger was ten years old, he joined his father at the machine shops as an apprentice. At the age of nineteen he became a sailor on an East Indian merchant ship. In 1876 Matzeliger went to Boston, Massachusetts. After working there for a year, he moved to Lynn, where he remained for the rest of his life. Because of his knowledge of mechanics and shoemaking, Matzeliger was able to get a job in a shoe factory, operating a sole sewing machine. While working there, he noticed that there was no machine that could last shoes. He began his plans for inventing a shoe lasting machine by closely watching hand-lasters at their work. In his experiments he used old pieces of wood and metal. He even made his own tools. Patiently he tested one idea after another.