As a developing country, we must keep ______ with the rapid development of the world economy.
【正确答案】 D
【答案解析】作为一个发展中国家。我们必须跟上世界经济迅速发展的步伐。A move不与keep构成固定搭配 B．keep step with“与……步调一致”C．speed不与keep构成固定搭配 D．keep pace with“跟上……的脚步”