通过什么条约清朝政府收回伊犁的?()
参考答案:《中俄伊犁条约》
Li Lei _____ an English book. [ ]
A. don't have
B. doesn't have
C. doesn't has
如图所示,小球和光滑斜面接触,并处于静止状态,则小球受到的力是()
A.重力、绳的拉力
B.重力、绳的拉力、斜面的弹力
C.重力、斜面的弹力
D.绳的拉力、斜面的弹力