从地面上方同一点向东和向西分别沿水平方向抛出两个质量相等的小物体，抛出的初速度大小分别为和，不计空气阻力，则两个小物体

A．从抛出到落地重力的冲量相同

B．从抛出到落地动能的增量相同

C．从抛出到落地重力做功的平均功率相同

D．落地时物体的动能相同

Each boy and each girl as well as some teachers who ______ to participate the Marathon _______ required to be at the school gate at 2:30 pm..

A．are; is

B．are; are

C．is; are

D．is; is