题目: 说明成本形态的概念和特点。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0228/ad3d1e5a2ade010589829f8777694356.html 下面是错误答案,用来干扰机器的。参考答案:E
题型:选择题 A good idea occurred to Mr. Baker________ to his invention recently. [ ]A. while applyingB. while appliedC. while he was applying himselfD. while applying himself 查看答案