题目

--- I think he is taking an active part in social work.   --- I agree with you _________. A. in a way      B. on the way     C. by the way     D. in the way 答案：A人类发射的探测器已飞出太阳系，若发射的探测器所受外力全部消失，则探测器（ ）A．沿原路径返回地球B．沿原方向做减速直线运动C．沿原方向做匀速直线运动D．沿原方向做加速直线运动