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- 1一个关于物理结构的问题!
- 2My father likes reading newspapers( )breakfast
- 3为什么说狐狸狡猾?
- 4质量为m,长为2l的均质细杆初始位于水平位置, 如图所示,A端脱落后,杆绕轴B转动,当杆
- 5化简(x+y)+(2x+1*2分之1y)+(3x+2*3分之1y)+…+(9x+8*9分之1y);当x=2,y=9时的值
- 6I don't know how _______(fly) the kite .I ask him______help(介)
- 7绝对值大于3/2小于3的负数的和为
- 8we will go to the cinema .怎样变反义疑问句?
- 9This is the very reason ____ he explained to me just now.A.why B.that C.which D.for which
- 10如图,a、b、c为一正点电荷形成的电场中的三条电场线,另有一带电的点电荷从M点射入电场,在电场力(只受电场力)作用下沿图中虚线运动到N点,则该点电荷从M向N运动的过程中( )