Unit 5 Exploring spaceA Let’s learnWatch and chooseWhat do you know about Earth?(1) Earth is a ______. A. planet B. star C. satellite(2) Earth travels around ______. A. the Sun B. the Moon C. MarsWatch and chooseWatch again and checkWhat do you know about Earth?(1) Earth is a ______. A. planet B. star C. satellite(2) Earth travels around ______. A. the Sun B. the Moon C. MarsAAWatch again and checkLook and sayWhat do we know about Earth?Listen and number（ ）（ ）12What do we know about Earth?Read and checkHi, I'm Earth. I'm a planet. I travel around the Sun....
