精选优质文档-倾情为你奉上教材练习答案及听力原文 Unit 1WARMING UP?Answers:1 Archimedes, Ancient Greek (287-212 BC) He was a mathematician. He found that if you put an object into water the water pushes the object up. It rises and partly floats. The force of the water pushing it up is the same as the weight of the object.2 Charles Darwin, British (1808-1882) The Origin of Species was published in 1859. It explained how plants and animals had changed over time to fit in with a changing en
