关于介绍电灯的英语作文

The invention of electric light
Before the advent of the electric light, the widespread use of lighting tools candles, kerosene or gas lamps. September 1878, Edison invented the electric light decision. He read a lot of books on electric lighting, determined to create a cheap, durable, and safe and convenient lamp. Edison made the light carefully summed up the failure of previous experience, to develop a detailed test plan。In 1879, after several experiments, Edison finally decided to make carbon wire filament. Electric light the most famous is a 19th century invention, Edison is also the most brilliant contributions to mankind.

如何运用社会媒体 英语作文

In the education teaching, change to a single, simple way to students with knowledge, fully application of modern teaching means to transfer information and developing students thinking ability, cognitive ability and the ability to analyze problems, the computer multimedia will present a incomparable advantage over the traditional education means. Computer multimedia is a kind of hypertext, graphics, animation, sound and other information together, and the integrated treatment and control through the computer technology. It has the characteristics of integration, intercrossing and controlling, make people through multiple senses to obtain relevant information, improve the efficiency of information transmission. Adopt this kind of teaching method, can speak abstract content specific visualization, macroscopic and microscopic things complex things simple, and can transmit the teaching information multi-angle to the students, improve the classroom efficiency and effect,
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