They do this by doing well-informed about their subjects, being honest in what they say, by using sound evidence, and by employing（）reasoning.

The interaction of these seven elements is what determi...

单项选择题The interaction of these seven elements is what determines the（）in any instance of speech communication.

Interference is anything that（）the communication of a m...

单项选择题Interference is anything that（）the communication of a message.

Whatever the speaker communicates is the message, which...

单项选择题Whatever the speaker communicates is the message, which is sent（）a particular channel.