theme of the Shanghai Expo was “Better city better life” It sent message to people aro

问题补充：

theme of the Shanghai Expo was “Better city, better life”． It sent message to people around the world to care about the places where they live．

A. /…a

B. The…a

C. A…the

D. /…the

答案：

A. /…a

(答案→)B. The…a

C. A…the

D. /…the

解析：原句意思是，上海世博会的主题是“城市，让生活更美好。”它给世界人民传递了一种信息，关爱我们生存的地方。用于表示特指的抽象名词前，用定冠词the；泛指某一事物用不定冠词，故选B。