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- 1After the earthquake,the first thing the local government did was to provid
- 2仲尼厄而作《春秋》;屈原放逐,乃赋《离骚》的意思
- 3已知向量A和向量B 是非0向量.且A+B与2A-B垂直,2A-B与A+2B垂直.求向量A.B的夹角角a的余弦值?(
- 4运用以上的方法,你能计算下面各题吗?49×8/9 17/18×26 5×19又2/3 26×7/25 18×5/17 38×6/37
- 5函数y=1x与y=x的图象在同一平面直角坐标系内的交点的个数是( ) A.1个 B.2个 C.3个 D.0个
- 6已知梯形的面积是48cm²,高是4cm,它的下底的长比上底长的2倍少6cm,则梯形的上底长为 ,下底长为 .
- 7This is a knife.怎样变复数.
- 8“精彩极了”和“糟糕透了”.在本文作者看来,爱有两种表现形式,.你在生活中有过类似的感受吗?500字.
- 9It’s Charlie’s birthday today,but he isn’t feeling happy.No one wishes him a happy birthday.Mother says nothing about hi
- 10m的2次方*2m的2次方*3m的2次方=