问题补充:
The number 911 is special number, , I think, that will be remembered by the Americans forever.
A. a, what
B. the ,it
C. a ,which
D. a, one
答案:
A. a, what
B. the ,it
C. a ,which
(答案→)D. a, one
解析:
第一空考查冠词的用法,a special number,“一个特殊的号码”,第二空考代词,one指代a number。选D。句意是:911是个特殊的号码,是美国人应该永远记住的号码。