The need to upgrade industrial equipment is great.

The need to upgrade industrial equipment is great.
A、change
B、rise
C、reduce
D、improve
【正确答案】：D
【题目解析】：句意:对工业设备进行改进迫在眉睫。upgrade 意为“改进”。选项中change意为“改变”;rise意为“上升”;reduce意为“减少”;improve意为“提高,改善”。故本题选D。