题目

—It's raining outside. Do you have to leave today? —Yes. ________ it rains, I'll leave because I have to attend the meeting tomorrow morning. A．Even if                B．As if C．Since                  D．Until 答案：A对于做平抛运动的物体，以下说法正确的是（　　）A．若只将其抛出点的高度增加一倍，则它在空中运动的时间也增加一倍B．若只将其抛出点的高度增加一倍，则它的水平位移也增加一倍C．若只将其初速度增加一倍，则其水平位移也增加一倍D．若只将其初速度增加一倍，则其在空中运动时间也增加一倍