题目

绿色开花植物的结构层次是 A. 细胞→组织→系统→植物体           B. 细胞→组织→器官→植物体  C. 细胞→器官→系统→植物体           D. 细胞→器官→组织→植物体 答案：B.Not only food and clothing but also medical treatment has been _________the people who need it in the flooded areas.A．supplied with B．provided for C．turned in D．set to