听力原文： The mass media(媒体) is an important part of life in the United States. Most Americans are exposed to the media daily in the form. of print, sound waves, and pictures; Over 55 million newspapers are sold each day. There are over five radios per house and it is said that radio reaches 77 percent of people over the age of 12 every day. The radio listening time for those over 12 is more than three hours each day. Most houses also have two or more television sets. The total viewing time is about seven hours per day. The amount of time that people spend in front of their television sets are different with age, education, etc., but on average it amounts to three to four hours a day. The mass media(媒体) is an important part of life in the United States. Most Americans are exposed to the media daily【11】of print, sound waves, and pictures. Over 55 million newspapers are【12】each day. There are over five radios per house and it is said that radio reaches 77 percent of people over the【13】of 12 every day. The radio listening time for those over 12 is more than three hours each day. Most houses also have two or more television sets. The total viewing time is about seven hours per day. The amount of time that people spend【14】their television sets are different with age, education, etc., but【15】it amounts to three to four hours a day.