PresidentHu'svisittoAustria，

问题详情：

President Hu's visit to Austria，______first by a Chinese president in 12 years，is regarded of _______great importance to global economic situation at present.

A．a：不填              B．the；a                  C．the；不填          D．the；the 

【回答】

C 考察冠词，第一空序数词前加定冠词the，第二空be+of +n．= be+adj．

知识点：冠词

题型：选择题