Chicago isn’t so famous Washington D.C.. However it’s the third city in the USA.A. like

问题补充：

Chicago isn’t so famous Washington D.C.. However, it’s the third city in the USA.

A. like; largest B. as; largest

C. like; large D. as; large

答案：

解析：as…as与···一样，在否定句中可用so来代替第一个as,芝加哥是美国的第三大城市，故用最高级。