题目

Lucy:How many people are there in your family?John: ( )A. There are some flowers. B. There are six.C. There is six. D. There aren't six. 答案:【答案】B【解析】略裸子植物和被子植物是由哪种植物进化来的(   ) A.苔藓植物和蕨类植物                              B.古代蕨类植物 C.古代藻类植物                                        D.古代苔藓植物
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