必修3 Unit 3 Back to the past单元质量评估. 单项填空(共15小题; 每小题1分，满分15分)21. Honestly speaking, it is my teachers_ that made me finally take up my present career as a biology researcher. A. advantage B. influence C. taste D. guard【解析】选B。考查名词辨析。句意：是老师的影响让我最终从事了现在的生物研究员事业。advantage优势；influence影响；taste口味；guard警戒。22. Most farmers in that area grow crops either to_ their family_ to sell for money. A. feed; andB. feed; orC. supply; orD. supply; nor【解析】选B。
