UNIT ONE CHILDREN''S EDUCATION UNIT TWO HIGHER EDUCATION UNIT THREE ANIMAL UNIT FOUR MEN AND WOMEN UNIT FIVE POPULATION UNIT SIX NEWS MEDIA UNIT SEVEN SMOKING AND ANTI-SMOKING UNIT EIGHT HEALTH UNIT NINE AUTOMOBILE UNIT TEN ENVIRONMENT AND RESOURCES UNIT ELEVEN UPDATE TECHNOLOGY UNIT TWELVE CHINESE ECONOMY UNIT THIRTEEN MANAGEMENT UNIT FOURTEEN POLITICS UNIT FIFTEEN FINANCE APPENDIX Ⅰ EXERCISES APPENDIX Ⅱ KEY · · · · · · (收起)