第12题: [多项选择]下列关于经济学中成本理论的表述中,错误的有()。 A. 经济学中的成本概念等同于会计成本,也称为"经济成本" B. 经济成本除了会计成本,还包括未计入会计成本中的厂商自有生产要素的报酬 C. 会计成本(显成本)=经济成本+隐成本 D. 若销售收入超过经济成本,则厂商可获得正常利润 E. 边际成本最初随产量的增加而减少,当产量增加到一定程度时则随产量的增加而增加 参考答案:A, C, D
第22题: [单项选择]STYMIE: A. show reliability B. plead C. vary course D. promote E. inform 参考答案:D
第23题: [单项选择]Questions 29 to 31 are based on the passage you have just heard. A. Because he was of ill health. B. Because he was in a bad mood. C. Because his wife abandoned him. D. Because his immune system was not strong enough. 参考答案:B 答案解析:[听力原文] Why did the man suffer the worst illness in iris life