题目

Lots of rescue workers were working around the clock，________supplies to Yushu，Qinghai Province after the earthquake. A．sending                  B．to send C．having sent               D．to have sent 答案：A下列语句正确的是（ ）A. 在所有连接两点的线中，直线最短 B. 线段AB是点A与点B的距离C. 两条不重合的直线，在同一平面内，不平行必相交 D. 任何数都有倒数