Question

英语单项选择题。答案是D，为什么不能选A？谢谢。

The number 9.11 is a special number,__,I think, that will be remembered by the Americans forever.
A.what B it C which D.one

Answer 1

此句中that引导的是定语从句，修饰one。而one则是number的同位语。解释说明number的。I think是插入语，可以去掉的。如果你选what，去掉I think ，就是what that will be remembered by the Americans forever 。这句话就错了。

Answer 2

有逗号

Answer 3

笨蛋，语法问题

Answer 4

what不能单独。只是用句首。