Unit 1 The population of China is about 1.37 billion.There are so many people on the Great Wall that you cant take photos.USE WORDS IN THE BOX TO DESCRIBE THE PHOTO.noise people space traffic 8,742 2,463,128 1,370,000,0002,000,030,000Listen and repeat the numbers.eight thousand, seven hundred and forty-twotwo million, four hundred and sixty-three thousand, one hundred and twenty-eightone billion, three hundred and seventy milliontwo billion and thirty thousandLISTEN AND CHOOSE THE BEST ANSWER.cb1. Whats the population of Beijing? a) About 11 million. b) About 13 million. c) About 20 million.2. Whats the population of Chongqing? a) About 28 million. b) About 33 million. c) About 36 million.What are they talking about?They are talking about the increasing population.Listen and answer.People in the worldBabies born every minuteBabies born every yearPopulation of ChinaPopulation of the worldRead the conversation and complete the table.over 250131.4 million1.37 billion7 billionListen again and check the answers.Check the statements you agree with.1. There are too many people in the world. 2. The increasing population is the biggest problem in the world. 3. People should not have too many babies.4. A city should not hold more than one million people. Whats happening to our city now?crowdssmokepollutionheavy trafficnoisepopulationWhats happening to our city?Who causes pollution?What can we do?Think and speak.Im so tired. Help me!Help me!