melissa and loveletter made use of the trust that exists between friends or colleagues. imaginereceiving an （ ） from a friend who asks you to open it. （2005年上半年网络工程师上午真题解析）
melissa and loveletter made use of the trust that exists between friends or colleagues. imaginereceiving an （ ） from a friend who asks you to open it. （2005年上半年网络工程师上午真题解析）
A、attachment
B、packet
C、datagram
D、message
参考答案：A
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