题目内容
（请给出正确答案）
[主观题]
Electronic mail, or mail, as it is known to its many fans, has been around for over two de
cades. 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
提问人：网友gongbeihua
发布时间：2022-01-07
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