n维向量的定义

It was three days before that man came back请问这里的before怎么解释? Qiao Ming has three pair of sports shoes改错 John is a Australian with glasses 改错 My MotherMy Mother has been making cakes for sixo'clock this morning Many people think that Chinese is very hard to learn it Could you please not to follow me aro 她是一个与众不同的女孩 英文 She is a girl _______ _____ _____ _____ others 跪求《知法守法懂法,争做阳光少年》为题的作文! 《懂法、知法做守法的好少年》 做这个题目的手抄报的材料要稍微短些 That is kind ___ the old man.填介词to of for with 待选! He is so wise a man that all the people__A look up to him B look into him C look him up D look on him选什么为什么 姓用英说怎么写? 郑嘉颖的英文名是Kevin,这个单词怎么读?比如：Happy——嗨皮,Look——露克,实在不行给个音标也好!我会追加奖赏的!あ恋月ゲL ：请你放尊重些，没学识没教养就别上这来无理取闹！ My friend David is going to singsing this afternoon.改错 My friend David is going to singing this afternoon改错 in glasses和with glasses有什么不同吗?还是有不可以的? red glasses前用in还是with?同上 3.下列文件中,可运行的程序文件是___.(A) EX.P(B)EX.CON(C)EX.PAT (D)EX.EXE She goes to school on foot.(改为同义句） for,at,to ,of的各自用法 谁能告诉我to,for,at的用法 有谁讲讲 for , at 用法, 怎么解释 PAT有哪些意思好象有很多意思（包括简称）, pat什么意思 路由器的PAT是什么意思? The little girl doesn't know ------- in front of so many people.The little girl doesn't know ------- in front of so many people.A how to do B to do what C what to do D what to do it “PAT”的教育理念是什么意思啊? Don't worry ,there is still （ ）time to finish the work Jack is new here ,so （ ）people know himJack is new here ,so （ ）people know him Dav All of the studenta think that she is an easy-going teacher的同意句 帮忙起一个与我名字有谐音的英文名我的中文名拼音是binyu,因为我要上广播节目啦,想起一个与我名字有谐音的好一点的英文名,我是男生.最好想到多少说多少. Marry is a teacher.she is often smiling.合并句子Marry is a teacher _ _ often smiling.Marry is a teacher.she is often smiling.合并句子Marry is a teacher _ _ often smiling. 英语翻译安卓系统翻译软件有很多,象金山词霸,有道词典,可是都只能翻译单词,有没有什么好的能够翻译英文句子,文章的软件呢,请高手指教, at 与in的用法当介词使用 用什么来问,他的回答是 It is May 1st 是what is the date?what day is it?what is date还是 When is the date 英语语法in和at的所有用法最好是简洁易懂的 Labour Day is May 1st.对may 1st提问.