Slide 1 UNIT FIVE The Villain in the Atmosphere Slide 2 Lead In  Brief Introduction of Main Idea  While small quantity of carbon dioxide in the air is essential to…

I. Lead-in Questions 1.Do you think it legal to clone human beings? 2.Are there any benefits from cloning? 3.Do you want to be cloned? And why? II. Cultural Notes 3.Narcissus…

Unit 8 Time off I. Lead-in II. Language Points III. Guided Writing IV. Presentation and Exercises Lead-in Background Information Winston Churchill (1874-1965) British Prime…

Unit Four The Professor and the Yo-yo Lead In Brief Introduction of Main Idea Einstain is one of the greatest scientists of all time. His ideas and theories have, directly…

Unit 5 The World at War I. Lead-in II. Language Points III. Guided Writing IV. Presentation and Exercises Lead-in Background Information Joseph Heller (1923-1999) an American…