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《Reading and vocabulary》最新PPT课件优质课下载
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Which scientist discovered that objects(物体) in water are lifted up by a force(力) that helps them float(漂浮)?
B. Archimedes阿基米德
C. Thomas
Edison
爱迪生
A. Charles Darwin 达尔文
Who wrote a book explaining how animals and plants developed as the environment changed?
Marie Curie
居里夫人
C. Charles
Darwin达尔文
B. Gregor
Mendel
孟德尔
Who invent the first steam engine(蒸汽机)?
C. Thomas Edison
B. Archimedes