So extraordianry that it left a deep impression on visitors.
A. was the Shanghai 2010 Expo
B. the Shanghai 2010 Expo was
C. did the Shanghai 2010 Expo
D. the Shanghai 2010 Expo did
网友回答
(答案→)A. was the Shanghai 2010 Expo
B. the Shanghai 2010 Expo was
C. did the Shanghai 2010 Expo
D. the Shanghai 2010 Expo did
解析：考查So ... that句型so位于句首时句子采用倒装的用法。“上海2010世博会如此不寻常以至于给游客留下来很深的印象” 选A