Alexander Graham Bell pdf epub mobi txt 电子书 下载 2024


Alexander Graham Bell

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McPherson, Stephanie Sammartino/ Butler, Tad (ILT)
Lerner Pub Group
2007-10
48
$ 31.56
LIB
9780822576068

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发表于2024-11-23

Alexander Graham Bell epub 下载 mobi 下载 pdf 下载 txt 电子书 下载 2024

Alexander Graham Bell epub 下载 mobi 下载 pdf 下载 txt 电子书 下载 2024

Alexander Graham Bell pdf epub mobi txt 电子书 下载 2024



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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.

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