矩阵初等变换后行列式值会不会变

My aunt visited our school then.(划线提问) 对visited our school提问 My aunt 【teach 】 English in our school用所给单词的适当形式填空 1、I visited my aunt.(一般疑问句）2、Tom do his homework last Monday.(否定句)3、Did Mary play basketball last week?(肯定句）4、_I cleaned our classroom_ last week.(对划线部分提问)5、We went to the beach.(变否定句) My aunt visited beijing t____ ,in 2001 and 2008 I am away now,but will contact you later.这是啥意思? I___ speak English well,but i____speak french well sa la he 的意思是不是再见?是什么语言? sa la he 的意思是不是再见?是哪国语言? speak good English 与speak English well 的区别 英语翻译急 急 英语翻译如题吖.我用了很多翻译软件都觉得不对劲... 求Nothing agrees with me more than oysters的翻译 蝶阀的特点是什么? 蝶阀优点? 蝶阀的动作特点和优点是什么? sa lang hae sa rang hae 知道的告诉下 再说声sa lang hae yo 里的sa lang hae yo 韩语我爱你这3个字怎么打?那几个字怎么打啊?是用智能吗? We want two good m( )for our band 电动双位蝶阀的双位是什么意思 蝶阀D371XP是什么意思? 双杆蝶阀英语怎么说? sa la hei yo ,这句是什么意思? my uncle bought a new sports car a month ago改为现在完成时 sa la hei yo 的意思 sa la hei my father bought a car last month ,but unluckily ,the price of petro i（ ） again? sa la hei yo什么意思啊? 拜托好心人! sa lang hei yo 中国登上月球了吗? House Of The Rising Sun 中文歌词哪位高手能翻译下这个:There is a house in New Orleans,they call the "Rising Sun",and it's been the ruin of many a poor boy,and God,I know,I'm one.My mother was a tailor,sewed my new blue jeans,my father wa House Of The Rising Sun这歌名翻译成中文是什么啊?