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).
答案与解析: 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
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