As is known.it was Hu Jintao. presidem in our nation.who gave lecture at the ope

As is known，it was Hu Jintao， 　presidem in our nation，who gave lecture at the opening ceremony of Beijing Olympics。

A the；a　 B the；不填　 C；the D不填；a

试题答案

D

表示职位的名词president作同位语，其前不加冠词；give a lecture为固定用法，意思是做演讲。