问题
选择题
We are greatly encouraged by ______ great expectation the people of all ethnic groups in China have of us, and we are aware that this is also ______ important responsibility for us.
A．a, the
B．the;an
C．the, the
D．a:/
答案
B
题目分析：第一空填the，特指“全国各族人民对我们的伟大期望”，第二空填an，泛指“这是一种重要的责任”，抽象名词具体化。所以选B。