2019-2020学年人教版高中英语新探究课件:必修5 Unit 1 Great scientists-Warming
2019-2020学年人教版高中英语新探究课件:必修5  Unit 1 Great scientists-Warming第2页

Do you know?

Who 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 changed?

Archimedes

Charles Darwin