Electronic mail, or mail, as it is known to its many fans, has been around for over two decades. Typically, email systems support five basic functions, as described below. (41) refers to the process of creating messages and answers. (42) refers to moving messages from the originator to the recipient. (43) has to do with telling the originator what happened to the message. Was it rejected Was it lost (44) incoming message is needed. So people can read their email. (45) is the final step and concerns what the recipient does with the message after receiving it.

A．Composition

B．Transfer

C．Reporting

D．Displaying

如果个人网上银行客户需要修改U盾密码，可通过以下哪些方式修改？（）

A.到营业网点修改

B.登录个人网上银行修改

C.通过U盾厂家提供的证书客户端软件修改

D.拨打95588电话修改