Unit 7. Whats the highest mountain in the world?Teaching planPeriod 1 Section A (1a-2c, Grammar focus)一、Teaching aims： 1. Learn about some of the famous geography and nature in the world: Qomolangma, the Nail, the Caspian, the Sahara. To know why they are top of the world by speaking and listening.2. Review the superlative and learn the expression of long numbers.3. Master the following sentences：Whats the highest mountain in the world? How high is it? Qomolangma is the h
