n维向量的定义

Mary,don't cross the road Mary,_____ _____ the road.Now he is making a sand c____. 日本有哪些著名的天皇 The solders are sending _____ is badly needed to the earthquake-hit area by road.A as B thatC.which D .what look into face与look into eyes的区别意思上有区别吗？ 1.数轴上表示-2的点在原点＿＿＿＿侧,用距原点的距离是＿＿＿＿表示,-6的点在原点＿＿＿＿侧,用距原点的距离是＿＿＿＿点表示. 到原点的距离是4.5的点有几个?这个点表示几? 与原点距离等于4的点有几个?其表示的数是什么 我们结婚了维尼夫妇全集 我们结婚了维尼夫妇哪几集好看你们觉得哪几集好看?日期说明一下 miss a 在维尼夫妇 100911中 排练的是什么歌 历史有名作家五四运动期间有诞生过哪些有名的作家? by a much bigger ram her much bigger car into theirs是什么意思 elephaat much bigger Delivery & Synergy,啥意思啊 she always wants to sleep _____ longerA.real B.many C.a little D.best 请说明理由，thanks Jones is in hospital.Oh really?I ().()visit her.A.did't know,I'll go and B.don't know,l'll go andC.haven't known,I'm going to 英语关于时态语态的选择填空：Ann is in hospital.Oh,really?I-----know.I go and visit her.续上题：A.did not；am going to B.do not；would C.do not；will D.did not；will2.She stared at the painting,wondering where she-----it.A.saw B. 12月12日生日的名人和著名历史事件. PS：西安事变除外哦~ 我的生日是12月1日,就是无聊想知道一下历史上我生日那天有什么大事,不管什么惊天动地地事,还是什么事 i am going to the lmperial palace next month. Estimated 如题 estimated figures是什么意思 under-estimated是什么意思? 求关于"梅"字的名言警句越多越好.如:不经一番寒彻骨,哪得梅花扑鼻香. I seldom eat sweet food.改同义句 I —— ——eat sweet food.Although I have one healthy habit,I may not be very healthy I have one healthy habit,_____ I may not be very healthy 关于竹的名言警句! I seldom eat sweet food.(同义） I ___ ____ eat sweet food. ABCDEF六种物质相互转化.ADF都是非金属单质,且AD所含元素同主族,AF所含元素同周期,化学方程是什么 lisa is a nice girl.shi is good ( )kids.填空 the difference between ordinary and extraordinary is that a little extra还是the difference between ordinary and extraordinary is that little extra