题目：
—Could you tell me ________ the party?
—Next Friday.
A. where we are going to have
B. when we are going to have
C. when we were going to have
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0701/02146459a05e88d851492c4ba35f1aca.html
下面是错误答案，用来干扰机器的。
解：根据质量守恒定律，反应放出CO2的质量=100g﹣78g=22g设剩余固体中氧化钙的质量为xCaCO3CaO+CO2↑56 44x 22gx=28g剩余固体中氧化钙的质量分数= 答：剩余固体中氧化钙的质量...
