问题
单项选择题
（） ghost exists in the world. That's your illusion.
A．No such a thing as
B．No such a thing as a
C．No such thing as a
D．No such thing as
答案
参考答案：D
解析：
ghost是个抽象名词，此处不可数，前面不应该加冠词，应排除B、C项；此处也不是强调某个物体，such后不需要加冠词，也排除A项。