久病小便频数，色清量多，夜间明显者多因( )
A．膀胱湿热B．以上都不是C．热盛伤津D．久病肾虚E．中气下陷
参考答案：D
There is ______ much water on the ground. It must have rained last night.[ ]
A. so
B. such
C. very
D. quite
如图所示，是光滑碗的截面图，先将一光滑小球从碗边一侧静止释放则
A．小球滑至碗底后静止不动
B．小球有可能滑到另一侧边缘
C．小球将从另一侧边缘滑出
D．小球到达另一侧边缘时，瞬时速度为零
