题目

已知是不重合的直线，是不重合的平面，有下列命题： ①若，则；②若，则； ③若，则；④若，则 其中所有真命题的序号是          ． 答案：②④ 根据括号中所给的汉语写出单词，使句子意思完整正确，并将答案填写在答题卡标号为 41—45 的相应位置上。【1】The man seems to be in his ______. (四十)【2】This is probably the ______painting I’ve ever seen.(丑陋的)【3】The book that is ______by a little American girl sells well. (写)【4】The boy learns to play the piano every ______evening. (星期二)【5】Animals are our friends, and we can live ______together. (和平地)