I developed very slowly and it took nearly two hundred years I was built as an analytical machine by Charles Babbage.
A. before
B. after
C. long
D. short
网友回答
(答案→)A. before
B. after
C. long
D. short
解析：考查连词before的用法。在这里意为“才”，句意：我发展的很慢花了将近两百年的时间我才被建成一台分析机。所以选A。