题目: 对任何企业来说,如果边际成本降低,根据利润最大化原则,该企业应当降价销售。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0722/6a7e9ce14ad2cf4ac76866011e97d5b2.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:填空题 用所给动词的适当形式填空。1. The sweater ______ (be) $15. 2. It's five. Let's ______ (play) football. 3. Mum, I want ______ (have) a party this evening. 4. She ______ (have) a computer game. 5. There ______ (be) a book and two pencil cases on the desk. 查看答案