diff --git a/jieba/__init__.py b/jieba/__init__.py
index 4717da5..b935985 100644
--- a/jieba/__init__.py
+++ b/jieba/__init__.py
@@ -153,7 +153,7 @@ def cut(sentence,cut_all=False):
 			sentence = sentence.decode('utf-8')
 		except:
 			sentence = sentence.decode('gbk','ignore')
-	re_han, re_skip = re.compile(ur"([\u4E00-\u9FA5a-zA-Z0-9+#]+)"), re.compile(ur"[^\r\n]")
+	re_han, re_skip = re.compile(ur"([\u4E00-\u9FA5a-zA-Z0-9+#&]+)"), re.compile(ur"[ ]")
 	if cut_all:
 		re_han, re_skip = re.compile(ur"([\u4E00-\u9FA5]+)"), re.compile(ur"[^a-zA-Z0-9+#\n]")
 	blocks = re_han.split(sentence)
diff --git a/jieba/dict.txt b/jieba/dict.txt
index a0923a8..f4b81ef 100644
--- a/jieba/dict.txt
+++ b/jieba/dict.txt
@@ -367421,4 +367421,9 @@
 龠 5 g
 龢 732 zg
 B超 3 n
-T恤 4 n
\ No newline at end of file
+T恤 4 n
+C++ 3 nz
+c++ 3 nz
+C# 3 nz
+c# 3 nz
+AT&T 3 nz
\ No newline at end of file
diff --git a/jieba/finalseg/__init__.py b/jieba/finalseg/__init__.py
index fec7767..2ba75d2 100644
--- a/jieba/finalseg/__init__.py
+++ b/jieba/finalseg/__init__.py
@@ -59,7 +59,7 @@ def cut(sentence):
 			sentence = sentence.decode('utf-8')
 		except:
 			sentence = sentence.decode('gbk','ignore')
-	re_han, re_skip = re.compile(ur"([\u4E00-\u9FA5]+)"), re.compile(ur"[^a-zA-Z0-9+#\n]")
+	re_han, re_skip = re.compile(ur"([\u4E00-\u9FA5]+)"), re.compile(ur"([a-zA-Z0-9]+)")
 	blocks = re_han.split(sentence)
 	for blk in blocks:
 		if re_han.match(blk):
diff --git a/test/test.py b/test/test.py
index f33c3f0..884b40a 100644
--- a/test/test.py
+++ b/test/test.py
@@ -91,4 +91,6 @@ if __name__ == "__main__":
 	cuttest('两块五一套，三块八一斤，四块七一本，五块六一条')
 	cuttest('小和尚留了一个像大和尚一样的和尚头')
 	cuttest('我是中华人民共和国公民;我爸爸是共和党党员; 地铁和平门站')
-	cuttest('张晓梅去人民医院做了个B超然后去买了件T恤')
\ No newline at end of file
+	cuttest('张晓梅去人民医院做了个B超然后去买了件T恤')
+	cuttest('AT&T是一件不错的公司，给你发offer了吗？')
+	cuttest('C++和c#是什么关系？11+122=133，是吗？')
\ No newline at end of file