加载页面出错。
请尝试刷新本页面。如果仍然不行,则可能是网络问题,请使用我们的自测网页查找页面加载受阻的原因。
详细了解可能的网络问题联系支持部获取更多帮助。

Amazing American Inventors of the 20th Century

Laura S. Jeffrey创作
电子书

The ten Americans profiled in this book may not be familiar to some people, but their inventions certainly are. Today, we take for granted devises such as televisions, microchips, laswers, and even the Super Soaker® water gun. Within the last one hundred years in the United States, creative individuals such as those introduced in this book have pushed technology beyond the dreams of just a few years ago. Each of these inventors began with an idea for improving some aspect of life. Through ingenuity, hard work, and talent, they made their ideas a reality. Includes profiles of William Lear, Philo Farnsworth, Beatrice Kenner, Gertrude Belle Elion, Gordon Gould, Charles Ginsburg, Robert Shurney, Jack Kilby, Stephanie Kwolek and Lonnie Johnson.

格式

  • OverDrive Read
  • EPUB电子书

语言

  • 英语

级别

  • Lexile® 蓝思阅读分级:850
  • 文字难度:4-5