Unit18warming,listeningandspeaking新教材课件
日期：2010-03-06 03:19
When we speak of inventions， we
can’t help thinking of the four inventions
in ancient China
How many famous inventors do you know?
What do they invent?
Thomas Edison
America
(1847——1931)
张衡
(78—139)
贝尔(England)
(1847--1922)
本茨(德国)
(18，
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