题目内容：

书面表达。

根据下表内容，写一篇80～100词的反映历史上重大发明的短文。文章开头已给出，不计入总词数。

Invention	Time	Who	Uses
digital camera	1975	Steven J. Sasson	take photos
telephone	1876	Alexander Bell	communicate
radio	1895	Guglielmo Marconi	listen to news and music

 

There are many inventions that have caused great changes in the world.Here's a short introduction.For example，digital camera was invented by