（）出使过西域。
A.郑和
B.张骞
C.哥伦布
D.玄奘
参考答案：B
用横线画出句中错误并改正。
1. Sorry, where's the camera?
2. What's a nice school bag!
3. Mum, where's cake?
4. I don't find Mum. Where's she?
邻甲基苯甲酸
