Unit6Whenwasitinvented.ppt

文档介绍：Section A Period 1 ( 1a — 1c ) When was it invented? What are the Four Great Inventions in ancient China? Do you know? What are the Four Great Inventions in ancient China? paper-making pass 指南针 printing 印刷术 gunpowder 火药 Do you know the following inventions? Who invented them, and when? paper Cai Lun 105 A. D. printing Bi Sheng 1041-1045 It was invented … compass 11th Century gunpowder 9th Century It was invented … car What ’ s this called in English? television puter umbrella camera A: When was the car invented? B: Well, I think it was invented in …. A. 1885 B. 1876 C. 1927 D. 1971 A: When was the telephone invented? B: Well, I think it was invented in …. A. 1885 B. 1876 C. 1927 D. 1971 A: When was the television invented? B: Well, I think it was invented in …. A. 1885 B. 1876 C. 1927 D. 1971