People from all over the world China on the successful launch of Chang’E-1.A. celebratedB

问题补充：

People from all over the world China on the successful launch of Chang’E-1.

A. celebrated

B. greeted

C. congratulated

D. enjoyed

答案：

A. celebrated

B. greeted

(答案→)C. congratulated

D. enjoyed

解析：词组congratulate… on…指因什么而祝贺。