The Shanghai Expo has had a major impact upon China. It is the first World Expo in a developing country in the event’s 159-year history.
A. having been held
B. to hold
C. being held
D. to be held
网友回答
A. having been held
B. to hold
C. being held
(答案→)D. to be held
解析：这题考查不定式的被动做定语，当名词被序数词修饰时，用不定式修饰，the first World Expo和hold是被动关系，句意是：上海世博会对中国有重大影响。这是在159年的历史首次在发展中国家举行的世博会。选D。