It was __________ exciting news that all of us couldn't help _________. A. so a, crying B. such, crying C. so, to cry D. such an, crying 答案:B甲、乙两物体在同一直线上做匀变速直线运动,它们的速度图象如图所示,则描述正确的是 A.甲、乙两物体运动方向一定相反 B.甲物体的加速度比乙物体的加速度大C.前4s内甲、乙两物体的位移相同 D.t=4s时,甲、乙两物体的速度相同