The forum’s official theme this year “shaping the post-crisis world” ______.

B
题目问的是：论坛今年的官方主题“形成危机后的世界”怎么样?文章第3段提到“The forum’s official theme this year had been” shaping the post-crisis world”, but that turned out to be premature.”其中premature意为“早产的，不成熟的”，也就是说，这一主题是为时过早、不切实际的。故选B。