问题
选择题
Shanghai has hosted 2010 world Expo. The world Expo has long history but it has never been held in Asia.
A．——；a
B．the ; a
C．the ; the
D．/ ; /
答案
答案：B
本题考查冠词。the 2010 world Expo特指2010年世博会；a long history一个很长的历史。根据句意选择B。