河北省石家庄第十五中学高二英语《Unit1 Great scientists》课件

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Unit 1 Great ScientistsDo you knowWho discovered that objects in water are lifted up by a force that helps them float Who wrote a book explaining how animals and plants developed as the environment changedArchimedesCharles Darwinwarming upWho invented the first steam engine Thomas NewcomenWho used peas to show how physical characteristics are passed from parents to their children Gregor MendelWho discovered radium Who invented the way of giving electricity to everybo，大小：1.01 MB