The invention of steam engine greatly sped up the industrial revolution which a lot to t

问题补充：

The invention of steam engine greatly sped up the industrial revolution, which a lot to the take-off of the world.

A. led

B. contributed

C. constructed

D. exposed

答案：

A. led

(答案→)B. contributed

C. constructed

D. exposed

解析：考查动词搭配辨析：A. led是不及物动词，lead to“导致”B. contributed及物和不及物都可以，contribute （sth）to“对…有贡献”，C. constructed建设 D. exposed暴露，句意是：蒸汽机的发明大大加速了工业革命的进程，这对世界的腾飞有很大的贡献。选B。