问题
选择题
______ you have known everything about it, it is unnecessary for me to talk about it again.
A．As soon as
B．Now that
C．Although
D．While
答案
答案：B
题目分析：句意,既然你已经知道了一切，我就没有必要再谈论它了。as soon as 一……就; now that 既然; although尽管; while然而.故选B.
点评：解答此类题型首先要确定上下句关系,根据前后文关系确定适当连词. as soon as 一……就; now that 既然; although尽管; while然而