a1.Before you read the passsage, discuss theohestions with your partner, 1) Why does China carry out the one-child policy?2) What social problems do you think China's largepopulation has caused?

Paragraph 1 The world's and Asia's population.Read Paragraph 1 and fill in the blanks. Asia has a population of more than 3 billion That's to say, almost half_of the people in the world live in Asia now.