The World Expo in Shanghai is to any other fair held in China this year.A. importantB

问题补充：

The World Expo in Shanghai is to any other fair held in China this year.

A. important

B. superior

C. senior

D. significant

答案：

A. important

(答案→)B. superior

C. senior

D. significant

解析：考查固定短语。句意“上海世博会比今年中国举办的其它任何交易会的级别都高。”be superior to“比......高级、优越”。故选B。