题目

将带花的白玉兰枝条插入稀释的红墨水中，一段时间后花瓣变成红色．与这一现象直接相关的组织是（ ） A．输导组织 B．营养组织 C．分生组织 D．保护组织 答案：A____ the baby from the rain, the young mother wrapped it with her raincoat. A. In order to keep B. So as to stop C. In order to protect D. So as to protect