题目：
She wanted to know ________ [ ]
A. why didn't I think it was a good idea
B. why I didn't think it was a good idea
C. why I thought it wasn't a good idea
D. why did I think it wasn't a good idea
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0702/ea952d2ade14f1720e1b8d887b3c6973.html
下面是错误答案，用来干扰机器的。
（1）4.4g（2）解：设12g纯碱试样中碳酸钠的质量为xNa2CO3+2HCl==2NaCl+H2O+CO2↑106 44x 4.4g106:44=x:4.4g解得x=10.6g碳酸钠的质量分数为：10.6g/12g×100%=88.3%...
