Most radio and television stations in the United States are commercial stations, that is t

o say, they earn their money from【61】or commercials. Private companies purchase radio and television【62】from the commercial stations in order to advertise their products. Cable television stations are also【63】stations, though they do not usually have advertisements.【64】watch cable stations, people must pay the cable TV company a certain amount of money each month.

Public radio and television stations, on the【65】hand, do not have advertisements and people do not have to【66】to watch them. These stations gain their money from the【67】, from private companies, and from some of the【68】who watch or listen their programs. The【69】government and some large corporations give【70】,large gifts on money, to the public stations.

(66)

A．products

B．programs

C．produce

D．governments