题目

锌铜原电池产生电流时，阳离子                                   （      ）A．移向Zn极，阴离子移向CU极     B．移向CU极，阴离子移向Zn极C．和阴离子都移向Zn极           D。和阴离子都移向CU极  答案：B解析:略 The flowers should ________ around the house. [　　] A．growB．grows C．grownD．be grown