单选题 Most Americans spend far more of their leisure time on the mass media than people in any other countries. (1) , most of us hear, see, (2) read some of the media while (3) other activities. Thus an (4) large number of our waking hours are spent with the mass media. (5) all the media, television is clearly (6) , with newspapers a close second, as a (7) of news and other information. Our (8) to all media is important, (9) , because all of them contribute materials for the construction of that world in our heads. For most people, increased use of one medium does not (10) use of another. In fact, in certain cases, and especially for certain purposes, the more one uses one medium, the more (11) one is to use others.
There are various (12) that can cause you to (13) yourself to the media (14) , avoiding much of the material with which you disagree. Some of that selective exposure is probably (15) the psychological pressure you feel to avoid the discomfort caused by confrontation with facts and ideas contrary to your beliefs, attitudes, or behavior. However, some selective exposure is not due to the pressure for consistency but to other factors, such as your age, education, and even the area in which you live and the people with whom you associate.
Quite a few sorts of factors that (16) your media experience is the social context of exposure: whether you are alone or with others when you are exposed to a medium; whether you are at home, at the office, in a theater, and so on. These contexts are as much as a (17) part of the message you will (18) as film image on the screen or words on the page. In addition, that social context affects-both directly and indirectly-the media (19) to which you become exposed. New friends or colleagues get you interested in different things. Other members of the family often select media content (20) you would not have selected, and you become exposed to it.
These various factors have so much influence on your media exposure that so little of that exposure is planned.