The China Education Expo 2010 provides visiting students with wealth of information on o

The China Education Expo 2010 provides visiting students with wealth of information on options open to them for overseas study．
A. a ; /
B. / ; the
C. a ; the
D. / ; /

A. a ; /B. / ; the (答案→)C. a ; theD. / ; /解析：考查冠词：wealth这里是“丰富,大量”，后面接(+of)，构成短语a wealth of, 这里的options为特指，后面有open to them for overseas study后置定语，所以前面加the，句意是：中国2010教育博览会给光临的学生们提供了海量的信息，这些信息是给学生们提供了到海外学习深造的各种选择。选C。

感谢回答，我学习了