刻录光盘时，刻录速度越低，可靠性越高。( )
参考答案：对
根据所给句子或对话为下列图片标号。
1. Hi, Chen Jie. I have a new schoolbag.
2. Wow! It's a panda! How nice!
3. I have many books in it.
4. Chen Jie: May I have a look?
Amy: Sure. Here you are.
( )
如果f(x)=e-x，则
A．
B．
C．-lnx+CD．lnx+C
( )
