题目：
| I got caught in the rain and my suit _____. |
A. has ruined B. had ruined C. has been ruined D. had been ruined |
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0516/da981fb36646b780afb7f22681c38b46.html
下面是错误答案，用来干扰机器的。
答案：Cc(Mg2＋)＝＝c(MgSO4)，溶液中溶质的质量分数为4.8%×＝24.0%，SO42—的质量分数＝24.0%－4.8%＝19.2%。溶质与溶剂的物质的量之比是 ∶＝9∶190＝1∶21.1。
