下列有关实验原理或操作正确的是() A . 选择合适的试剂,用图甲可分别制取少量CO2、CO和SO2 B . 洗涤沉淀时(见图乙),向漏斗中加入适量水至浸没沉淀并滤干,重复2-3次 C . 用图丙所示装置除去HCl中的少量CO2 D . 用图丁装置从KI和I2的固体混合物中回收I2 答案:B—Whose songs have you been playing? —______ years we played other people's songs, but now we play______ our own songs.
[ ]A. In, mostly B. For, most C. For, mostly D. In, the most