问题
选择题
It was________great shock to the world that two aero-planes crashed into ______World Trade Center in New York o September 11th, 2001.
A．a; /
B．a; the
C．the; the
D．/; the
答案
答案：B
选B。shock指代具体事情时为可数名词，a great shock意为“一次沉重的打击”；由普通名词构成的建筑类专有名词需加冠词，故答案为B。