问题
选择题
He has gained ______ rich work experience there and is showing _______ great progress.
A．a; a
B．a; /
C．/; a
D．/; /
答案
答案：D
冠词考查题。第一空experience作“经验”讲为不可数名词其千不用冠词，作“经历”讲为可数名词；第二空progress“进步”不可数名词其前不用冠词。句意：他在那获得了丰富的工作经验并且表现出很大的进步。