Hi, boys and girls, may I have your attention, please! I have an announcement to make.
The summer holiday is just around the corner. As I know, all of you work very hard during school time, so you...
Hi, boys and girls, may I have your attention, please! I have an announcement to make.
The summer holiday is just around the corner. As I know, all of you work very hard during school time, so you...
最新问答: 5\9x-1\6x=14这道解方程怎么做? 已知y=y1+y2,y1与x的平方成正比例,y2与x成反比例,并且当x=1时,y=1,当x=3时,求x=-1时,y的值. 李明常常步行去学校 用英文怎么说 假如地球不转了怎么办? 人类还会发生重大进化吗? 鸡兔同笼,有25个头,78条腿.鸡兔各有几只? (2011•顺义区二模)已知定义在区间[0,[3π/2]]上的函数y=f(x)的图象关于直线x=[3π/4]对称,当x≥ 已知5.23的a次方=1000,0.00523的b次方=1000,求a分之一减b分之一的值 it's a beautiful day and i can't see it 此处为什么用and,?求大神解惑 抽屉原理的公式 物态一共有几种啊有好多种其他的,比如超流态,超固态一类的 铜与氧气反应的化学方程式和现象 如何判断几种化学物质能否同时存在? 生物圈是最大的生态系统.下列关于生物圈的说法,不正确的是( ) 603,780,962,456,384,和306的英语单词怎么写 英语:用适当代词填空1、Excuse me ,is this your pen?No,_____ isn't.It's There is a bird flying ( ) my head.括号里应该填什么 已知根号x+根号y-1+根号z-2=1/2(x+y+z),求x,y,z的值. 用坐标表示向量-i和向量2i+1/2j 关于地方时,下列说法正确的是:A北京上海的地方是相同