The primary participants in the communication process are senders and receivers.

The primary participants in the communication process are senders and receivers. A: 正确 B: 错误

The environment can not provide more information to help senders and receivers to clarify mesnings.

What can be concluded about "modem" A: It converts data from one form to another. B: It will be out of date soon. C: It serves as a link between senders and recipients of message. D: It transmits message more efficiently than other devices.