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- 1正方体的表面积公式
- 2what did he do和 what has he done 的区别
- 3有两边和它们的夹角对应相等的两三角形全等_.
- 4it is sunday morning.the students are having a music class.这句话对吗
- 51平方电缆能承受多大负荷?
- 6描写小学同学感情唯美的句子
- 7地球上是如何有空气,水分,
- 8指出下列句子句式特点
- 9it felt funny wearing my mother's cloth when i was young
- 10如图 在三角形abc中ab等于ac,ad垂直bc,点p在bc上,pe垂直bc交ba延长线于e,交ac于f,(1)求证2ad=pe+pf