Lead-inLook at the pictures.We can see many people in the world.导导Leaning aims1.The new words:noise,prepare,notes,report,huge,increase,problem,birth,billion,fifth,grow,hang on,prepare for,too much2.The sentences:Whats the population of Beijing?The causes a lot of problems such as too much traffic and noise.The population of China is about 1.37 billion.Hang on a minute3.The grammar:初步了解冠词和数词的用法，运用所学句型谈论人口问题。New wordsnoisepreparenotesreporthugeincreaseproblembirthbilliongrow噪声，杂音噪声，杂音准备；预备准备；预备笔记；
