填空题

Surfing is a thrilling and dangerous activity in which a person
balances on a board and rides the surface of a big, crash ocean wave. 62. ______.
Channel surfing is a bit different. In this activity a person sits on a couch
and pushes the button of a television remote-control devices many times a
minute check and recheck all the channels. In the United States, channel 63. ______.
surfing is by far the more popular sport. When television first replaced
radio, in the 1950s. channel surfing was known. Back then, there were 64. ______.
only a few stations. Viewers had their favorite shows and watched it 65. ______.
devotedly all the way through. In fact, studies showed that when a family
sat down to watch a favorite program at 7 p. m. , they stayed with the
same channel rest of the evening. With the coming of the cable television. 66. ______.
dozens of channels now offer a great variety of featured films, situation 67. ______.
comedies, news, weather, talk, science shows, documentaries, and
advertising. Facing with so many choices, viewers often become quiet and 68. ______.
feel a need to check, in all the other stations. 69. ______.
Some studies show that men m a unique U.S. household usually want 70. ______.
to hold the remote control and surf the channel: women usually like to
choose one program and watch through. 71. ______.