问题详情

Multipurpose Internet Mail Extension (MIME) is a(46)document messaging standard in the Internet enviroment, with MIME, users can send(47)Email messages that include audio, video, graph-ices, and text to any other user of a TCP/IP network. Richtext information can also be(48)into messages. It defines the fonts, formats, and(49)features of a document so the document can be easily(50)on many different types of systems.
A．complete
B．compound
C．simple
D．efficient请帮忙给出正确答案和分析，谢谢！