UNIT 1 INVITATION AND LANGUAGE LEARNING UNIT 2 FIGURES AND SCIENCE UNIT 3 COMPUTER AND INTERNET UNIT 4 MUSIC AND ENTERTAINMENT UNIT 5 REVISION I UNIT 6 FAMILY GENE AND SOCIETY UNIT 7 AUTOMOBI LE AND HOUSING UNIT 8 POLLUTION AND ENVIRONMENT PROTECTING UNIT 9 SELF AND LIFELONG LEARNING UNIT 10 REVISION Ⅱ Vocabulary