大师作文网-_-b
[^_]+(?=_[^_]+_[^_]+\b)这个正则表达式的意思?
1.t_r_ 2.n_ _ _ 3.b _ k_ 4.a_ _ _ 5._ _a _ 6.h_ _ _
根据答句给出问题． A：_ _ _ _ _ __ _ _ _ B:He often goes to school on
A:Look at the boys!Are they going canping?B:_,_ _.They are_
A：What are t_ _ _ _ beside him?横线上填什么?B：Some flowers.
_ 小题1: _ _ People use money to buy food, furniture, books, b
_
@_@
_..
(@_@)
(>_
:>_