单选题What channel is general communication used?（）Aany appropriate channel except public communicationBany appropriate channel except for public communicationsCany appropriate channel besides public communicationDany appropriate channel beside public communication
单选题
What channel is general communication used?（）
A
any appropriate channel except public communication
B
any appropriate channel except for public communications
C
any appropriate channel besides public communication
D
any appropriate channel beside public communication
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解析：
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