下列哪一项不是左向右分流先天性心脏病的共同特点（）
A.肺血流较多
B.易患肺炎
C.生长发育差
D.哭闹后青紫
E.差异性紫绀
参考答案：E
宋江攻打祝家庄，前两次均失利，第三次才得以成功。
Kangkang: Hi, Maria. You have been to Kunming with your family to spend your winter vacation, haven’t you? 小题1: _____________
Maria: It’s great! The scenery there is very beautiful.
Kangkang: 小题2:_______________________
Maria: The weather there is like spring all the year round. It isn’t cold at all.
Kangkang: So you had a good time there! But why do you look worried? 小题3: _________
Maria: I was so happy to enjoy myself that I forgot to do my homework!
Kangkang: 小题4:________________________ Homework must come first.
