问题
选择题
The number 911 is a special number，________ that will be remembered by the Americans forever．[ ]
A．what
B．it
C．which
D．one
答案
答案：D
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The number 911 is a special number，________ that will be remembered by the Americans forever．[ ]
A．what
B．it
C．which
D．one
答案：D