Unit 1 The population of China is about 1.37 billion.
导学目标：
1. 掌握并正确运用下列单词和词组：noise, prepare, notes, report, huge, increase, problem, birth, billion, fifth, hang on, grow .
2．掌握冠词a, an, the 的用法，以及数字的用法。
自主预习：
一、根据句意及首字母提示补全单词
1. Students are busy taking n_________ in class.
2. He is p_______________ his speech(演讲) for the meeting tomorrow.
3. Beijing is a h_________ city, with so many people.
4. It was the b___________ of his grandchildren which gave him greatest pleasure.
5. The population continues to i________________.
6. Do you have any p________________?
