问题
选择题
The invention of steam engine greatly sped up the industrial revolution, which ________ a lot to the take-off of the world.
A．turned
B．contributed
C．constructed
D．exposed
答案
B
题目分析：句意：蒸汽机的发明极大地加速了工业革命的进程，这对世界的腾飞有很大贡献。A. turned使变成，转动；B. contributed 贡献，有助于；C. constructed构造，建造；D. exposed 暴露，揭露。根据句意选B。
考点：