True or False? The telephone was Alexander Graham Bell's first invention. False Alexander Graham Bell invented a talking machine when he was fifteen years old. Even before that he had invented wheat husker. As a young man, he taught deaf children how to talk at a school in Boston, Massachusetts. He invented a metal detector that was used in several wars to find bullets in wounded. Later in life, he experimented with small airplanes and special boats called hydrofoils. One hydrofoil set a speed record of seventy-one miles per hour in 1919, making it the fastest boat in the world.
具体描述
读后感
评分
评分
评分
评分
评分
用户评价
评分
评分
评分
评分
评分
相关图书
本站所有内容均为互联网搜索引擎提供的公开搜索信息，本站不存储任何数据与内容，任何内容与数据均与本站无关，如有需要请联系相关搜索引擎包括但不限于百度，google,bing,sogou 等
© 2025 book.wenda123.org All Rights Reserved. 图书目录大全 版权所有