问题比较多。西
The World winde web has existed since 1992.
Robots were fist made in the 1950s.
The Great Wall of China was built around 214 BC.
Computera began to be in use in the early 1930s.
The first plane was flown in 1903 by the American Orville Wright.
Tom Kilburn wrote the world's first computer programme in 1948 at Manchester University.
Edinburgh castle was built between 1058-1093.ITwas restored in 1745 to what it looks like today.