Communication is a（n） _________ by which a source transmits a message to a receiver through some channel。 A: transaction B: activity C: action D: process

The communication process involves the following interrelated elements: the context, the participants, the message being communicated, the channels through which the communication occurs, the presence or absence of “noise”, and the verbal and nonverbal responses known as feedback.

When you go through customs control, if you have something to declare, you’d go through the “red channel”; if you have nothing to declare, you’d go through “green channel”.( )

It also allows instrument approaches to be made procedurally at airports where air traffic control does not use ____or in the case of ____ failure. A: radio B: communication C: electricity D: radar

It is possible to use satellites to predict earthquakes because satellites ________. A: take pictures of the Earth B: catch radio waves sent from the Earth’s surface C: are sensitive to Earth’s movements D: see almost the entire Earth