The atmosphere The atmosphere is a thin blanket of gas that envelops the earth The gases that make up the atmosphere are held close to the earth by the pull of gravity With increasing distance from the earth's surface, the temperature, density, and composition of the atmosphere gradually change
Teaching plan Book three Unit Five Section A Graceful hands. Warm-up Questions and Introductory Remarks (1)What does the title\ Graceful hands remind you of at first sight? (2)How did the woman die?
Exercise 1 Before reading the passage, try to answer the questions. 1. how much do you know about the internet? 2. What do people usually do on the internet? 3. What has made the Internet possible? Modern Communication: