The first great invention is the wheel and it is still widely used today. It is useful because it makes travelling long distances(距离)easier. In the early 1800s, the world started to change. There was little unknown land in the world, but people needed to live, so they began to work...
This week, we are going to learnabout great inventions in the world.(A)许多发明物 都是偶然间创造的.The inventors were trying to make something (B)completely different. Here is one story. In 1945, at the end of the Second World War, Percy LeBaron Spencer, an American (C)___,was wor...
in 1978,he created some software and a computer operating system when he was working for another company in Poole.然后,在1978年,他在普尔的另一家公司工作时,开发了一些软件和电脑操作系统;In 1989,Berners-Lee learned how to join hypertext with the Internet.1989年,伯纳斯-李学会了如何将超文本与互联...
This week, we are going to learn about great inventions in the world. Many inventions werecreated (A)accident. The inventors were trying to make something completelydifferent. Here is one story.In 1945, at the end of the Second World War, Percy LeBaron Spencer, an American inventor,was wor...
One of the greatest inventions in the history is the invention of the World Wide Web by Tim Berners-Lee. Berners-Lee was born on June 8, 1955 in London. Both his parents were mathematicians (数学家) and were members of a team. The team built one of the earliest computers, the ...
根据第三段句子jet planes in the 1930s.30年代的喷气式飞机。This was also a time when a new material was first made.Nylon came out in 1935.It changed the kind of clothes people wear.这也是一个新材料首次制造的时期。尼龙于1935年问世。它改变了这种类型人们穿的衣服。可见尼龙是和喷气式飞机在同...
In the 1880s, new inventions began to change photogra-phy. Photographers could buy film ready-made in rols So theydid not have to make the film themselves Also, they did nothave to proces the film immediately. They could bring it backto their workrooms and develop itlater, meaning they ...
To address this, this paper studies the relationship between the level of recombination of inventions and their technological impact, along two steps. First, in contrast to the common idea of a linear relationship between recombination and impact we argue that the relationship is in fact a non-...
Alexander Graham Bell, Scottish-born American inventor, scientist, and teacher of the deaf whose foremost accomplishments were the invention of the telephone (1876) and refinement of the phonograph (1886). He also worked on use of light to transmit sound
Back down under the earth, where you belong. [. . .]. He could make a map of those words, beginning at the B and ending at the g鈥攚here all beginning begins and ends鈥攁nd they would make the strangest of upground and belowground topogr... S Moynihan - 《Studies in American Fict...