I. PRE READING: 1. Ask and answer the following questions: Where can you find these scenes? In under-developed countries What does this picture tell you? It describes a poor large family in the countryside. What does this picture tell you? It describes a poor slum in a small town. 2. vocabulary: • B.C. : Before Christ • A.D. : • figure (n): • resource (n) • (to) support : = provide • (to) limit: Ex: In 2000 B.C. Ex: In A.D. 2000 • (to) double • birth-control method (n) Anno Domini trước Công nguyên sau Công nguyên con số gấp đôi nguồn tài nguyên cung cấp hạn chế phương pháp hạn chế sinh sản II. WHILE READING: * Listen the passage: . world in 10,000 B.C was 10 million, in 1 975 it was 625 The population of the world in 10,000 B.C was 10 million, in 1 975 it was 625 million , in 1850 it was. million, in 1950 it was 2,510 million, in 1985 it was 4 ,76 0 million, in 2000 it was 6.6 million. 4 ,76 0 million, in 2000 it was 6.6 million. By the year 2015,