Questions 11 to 18 are based on the conversation you have just heard.

A．Communication actually takes place when the message is received.
B．There are more means of receiving than of sending communications.
C．Reception of communication involves use of the senses.
D．It is hard to organize by typing the means of sending communication.

A．Worse than in the past.
B．As bad as in the past.
C．Not so dangerous as in the past.
D．As necessary as in the past.