题目

He realized it was not soimportant after he got what he had desired. (用强调句强调划线部分) 答案：It was after he got what he had desired that he realized it was not so important.如图所示，光滑斜面固定在水平面上，顶端O有一小球，从静止释放，运动到底端B的时间是；若给小球不同的水平初速度，使小球分别落到斜面上的A点，经过的时间是；落到斜面底端B点，经过的时间是；落到水平面上的C点，经过的时间是，则A. B. C. D