题型:连词成句 Make sentences.看谁把火车开得又快又好。连词成句。1. to walk after I school breakfast 2. make body helps your Exercise and healthy strong 3. minutes an make Sixty hour 4. are Bones and inside your body muscles 5. my on clean I Sundays bedroom thirty for minutes 查看答案
题型:选择题 如图所示,在甲、乙两个相同的水平圆盘上,分别沿半径方向放置用长度相同的细线相连质量均为m的小物体A(位于转轴处)、B和C、D,它们与圆盘之间的动摩擦因数相等.当甲、乙的角速度缓缓增大到A和B、C和D恰好将要相对圆盘滑动时,则下列说法中正确的是( )A.若突然剪断细线,因A位于转轴处,故AB均静止B.若突然剪断细线,C仍静止,D向外滑动C.若突然剪断细线,C、D均向外滑动D.若突然剪断细线,A、B、C、D仍静止 查看答案