. After so many days on the way even Charles cheered up at the of the food.A. lookB. sig

问题补充：

. After so many days on the way, even Charles cheered up at the of the food.

A. look

B. sight

C. sign

D. appearance

答案：

A. look

(答案→)B. sight

C. sign

D. appearance

解析：考查短语：at the sight of 看到，看见，句意：在路上许多天之后，甚至查理一看到食物欢呼起来。所以选B。