题目

—What are you going to give your mother for her birthday? —I’m not sure. But I’ll buy her _______. A.something special         B. anything special         C. special something        D.special anything 答案：A杜鹃把卵产在其他小鸟的巢中, 其他鸟不仅替杜鹃孵卵，还哺育长得比自己大的小杜鹃。该现象是因为A.小鸟害怕凶猛的杜鹃，不得已为其哺育后代B.小鸟都很善良，愿意帮助杜鹃哺育后代C.孵卵和哺育是小鸟的乐趣D.孵卵和育雏是小鸟的先天性繁殖行为