目录 Unit 1 Campus Unit 2 Entertainment Unit 3 Animal Unit 4 Food Unit 5 Crime Unit 6 Disaster Unit 7 Sports Unit 8 Art Unit 9 Economy Unit 10 Ecology Unit 11 Health Unit 12 Automobile & Driving Unit 13 Quality Problems Unit 14 Shopping Unit 15 Gun Control Unit 16 Psychology
以下为对购买帮助不大的评价