Unit 4
World News: Up in Space
Part I Warming Up
A:Training Focus: Selecting Information
1. orbit: a path followed by a planet, star, moon, etc round another body 2. lift-off  n. the beginning of a rocket's flight into space, when it leaves the ground. （火箭等）离地升空，垂直发射3. ISS: the International Space Station:国际空间站