第1题: [单项选择]The main idea of this passage is ______. A. one type of people becomes happy. B. one type of people becomes miserable. C. the happy people enjoy all the cheerful things. D. there are two types of people in the world. 参考答案:D 答案解析:[精解] 这是典型对比型文章,比较乐观主义者和悲观主义者的不同。