Warming up& Reading Book 5,Unit 1 What do they have in common? They are scientists Unit 1 Great Scientists What do you know about them ? Let’s have a competition! Warm up scientist discovered that objects in water are lifted up by a force that helps them float? B. Archimedes C. Thomas Edison A. Charles Darwin Archimedes “Give me a place to stand on, and I can move the earth.” “给我一个支点,我就可以翘起整个地球.” 2. Who wrote a book explaining how animals and plants developed as the environment changed? A. Marie Curie C. Charles Darwin B. Gregor Mendel Charles Darwin . Origin of Species 《物种起源》 invent the first steam engine? A. Thomas Newcomen C. Thomas Edison B. Archimedes