Unit+6+When+was+it+invented 英语人教版九年级上册 .pptx,第一课时 Section A (1a-2d);一、根据句意,用括号中所给单词的适当形式填空。 1.Mobile phones play a very important part in our ___ (day) life. 2.The ___ (invent) of printing was a milestone (
Not until the 20th century did many sociologists seriously try to rid "culture" of the inegalitarian elements of "civilization." But they did so at the cost of creating the problem of cultural relativism, which teaches that all social modes of constructing knowledge and meaning have a claim to...
Alchemistsin China inventedgunpowderas a result of their search for life-extending elixirs. It was used to propelrocketsattached to arrows. The knowledge of gunpowder spread to Europe in the 13th century. 950: Windmill Nearly 5,000 years after the first sailing ships, the wind was first used...