题目

一说到杜鹊，你首先想到的是杜鹃鸟还是杜鹃花？生物界动植物界同名现象并不少见，它们虽同名但结构却差异很大．杜鹊花没有而杜鹊鸟具有的结构层次是（ ） A . 细狍 B . 组织 C . 器官 D . 系统 答案：DThe plan to be carried out next month needs _______ among the members of the labor union before _________ . A．to discuss, carrying outB．to be carried out, carried out C．discussing, being carried outD．discussed, to be carried out