题目

下列哪种营养物质是动物细胞培养中不需要的（）       A．                       淀粉                            B． 氨基酸                  C．   无机盐    D． 水 答案：A You are hurting me very greatly. I still may not forgive you,____you apologize. A. even though     B. so that    C. in case   D. in order that