编辑推荐您关注：
为了帮助大家有效备考英语四六级考试，读书人编辑整理了一些资料供大家参考：
1. It's believed that mixed-ability teaching can _______________(促使他们知识的积累和经历的丰富).
2. We _______________(使我们的行为符合别人的)based on a constant mental process of appraisal and interpretation.
3. The class are very active. They ________________(争先恐后地回答问题).
4. Oxygen is ________________(一种能和许多物质化合的气体).
5. Mr. Smith is ________________(这次事故的目击者之一).
答案解析：
1. enrich their knowledge and experience
2. fit our actions to those of other people
3. vie with each other in answering questions
4. a gas which unites with many substances
5. one of those who have witnessed the accident
