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a test ( ) history 括号里填什么介词表示一次历史测试填什么好 英语选择快!We asked our teacher _____ A.how will we have a test B.how we will have a testC.when would we have a test D.when we would have a test 若多项式x²+ax+b可分解为（x+1）（x-2）,试求a,b的值 定义一个基类圆形Circle类 定义一个基类圆形Circle类,它有一个私有数据成员radius和成员函数Area().Area()可以求圆的面积.从Circle类可以派生出圆柱体Cylinder类,它有自己的私有数据成员高度height, 【程序设计】---------------------------------------------------------定义一个点类Point包括x坐标和y坐标（int）.定义一个圆类Circle,有数据成员半径和表示圆心坐标的点类对象.圆类成员函数包括构 理发师让染个桃木红,请问什么是桃木红色? I will be out of the office starting 2007-02-05 and will not return until 2007-07-19. I will be out of the office starting 19/01/2007 and will not return until I will be out of the office 15/01/2010 and will not return until 18/01/2010 The shopping centre is behind my house.同义句 My bilk is behind the house.对behind the house提问 2008x2007分之2006得数是多少要过程 甲、乙两车分别从甲、乙两车分别从A、B两地同时出发,相向而行,甲每小时行50千米,乙每小时行全程的10%,当乙行到全程的5/8时,甲车再行全程的1/6可以到达B地.求A、B两地相距多少千米? 圆柱的底面周长是188.4分米,侧面展开是一个正方形,它的高是多少分米? I'll never forget the day on which I worked with you.I'll never forget the days in/during which I worked with you.I'll never forget the days on which we worked together.他们的介词不同的原因 advise的名词是 I am working very hard at the office. working,am,i,at,hard,the,office怎么排?回答者,我会对你感激不尽的, 桃木是红色的吗? I will not be in the office until Thursday.包括周四吗? 什么喊深桃木色?深桃木色是什么样子的? 你在生活中处处可以拾到蕴藏丰富光泽的小贝壳 该怎样缩句 The stduents in Class One are quieter than __ in Class Three.A.ones B.those C.them D.that选什么?为什么 一道有关向量与三角函数的题目,向量OA=(1+cosΘ,sinθ）（0＜θ＜π／2）,向量OB＝（1,tan（θ／2））,向量OC＝（1＋cosθ,sinθ）,当θ＝（ ）时,△ABC的面积最大? 怎样解这道三角函数与向量的综合运用题 梦到大贝壳昨晚梦到有人在我家楼下买很大的贝壳,里面的肉很鲜嫩,当时想着做着吃了.但是卖货人要我用空贝壳来换,价钱很便宜.我是女生 和be addicted to 相似的词组 be addicted to后面跟ing吗? The students in cCass One are quieter than those in Class Two 为什么是those 而不是ones be addicted to 我国的哪个著名高原上的部分平原地区被称为“坝子”? 三角函数加向量,