题目

---- Excuse me. Could you tell me ___________?---- Yes, There is a video shop next to the tall building.        A. what I can  buy some CDs             B. where I can buy some CDs              C. how I can  buy some CDs    答案：B20．生物体由小长大的原因?（　　）A．细胞的生长、分裂、分化??????????B．细胞的分化????C．细胞的生长??????????????????????????????D．细胞的分裂??