— Do you know ______ the MP4 yesterday?— Sorry, I've no idea about it.
A：how much did he pay for
B：how much he paid for
C：he paid for how much
D：he paid how much for
72×4=____
暴—____ ____ 车—____ ____ 肖—____ ____
到—____ ____ 宜—____ ____ 贞—____ ____
下列溶液暴露在空气中，溶液质量减少的是（不考虑水的挥发和温度变化）（）
巴西的地形主要是（ ）
