高三水平 英文介绍中国 要演讲2 3分钟

是2或者3分钟吧.没听说过演讲有23分钟的.

那你从最土的四大发明说起吧

The Four Great Inventions

China's long history has seen some extremely important inventions emerge, most noticeably gunpowder, paper making, printing and the compass, which, in the words of Roger Bacon, changed the whole appearance and status of things in the world.

China was the first country in the world to make proper paper. Paper made during the Western Han Dynasty (202 BC-16 AD) has been found in Gansu Province, Xi'an and other places in Shaanxi Province as well as Xinjiang. A further development of paper is credited to Cai Lun of the Eastern Han (25-220). He used plant fiber such as tree bark, bits of rope, rags and worn-out fishing nets as raw materials. In 105, Cai presented the first batch of paper made under his supervision to the Han emperor, who was so delighted that he named the material "Marquis Cai's paper". Eastern Han Dynasty paper found in Wuwei, Gansu, in 1974