Television①Television has changed the lifestyle of people in eve

Television
①Television has changed the lifestyle of people in every industrialized country in the world. In the United States, where sociologists have studied the effects, some interesting observations have been made.
②Television, though not essential, has become an important part of most people' s lives. It alters people's ways of seeing the world； in many ways, it supports and sustains（维持）modem life. Television has become a baby-sitter, an introducer of conversations, the major transmitter of culture, a keeper of tradition. Yet when what can be seen on TV in one day is critically analyzed, it becomes evident that television is not a teacher but a sustainer ； the poor quality of programming does not elevate（提高）people into greater understanding, but rather maintains and encourages the life as it exists.
③The primary reason for the lack of quality in American television is related to both the history of TV programming development and the economics of TV. Television in America began with the radio. Radio companies and their sponsors first experimented with television. Therefore, the close relationship which the advertisers had with radio programs became the system for American TV. Sponsors not only paid money for time within programs, but many actually produced the programs.
④Thus, in American society, television is primarily concerned with reflecting and attracting society rather than experimenting with new ideas. Advertisers want to attract the largest viewing audience possible, to do so requires that the programs be entertaining rather than educational, attractive rather than challenging.
⑤Television in America today remains, to a large extent, with the same organization and standards as it had thirty years ago. The hope for further development and true achievement toward improving society will require a change in the entire system.
19.Paragraph ④:
A、Conclusion
B、Television in Changing People's Lifestyle
C、Hope for a Change
D、Interesting Observations in the US
E、Reason for the Lack of Quality in TV Programs
F、Origin of TV Programs
【正确答案】：A
【题目解析】：第四段第一个词“thus”，清晰表明这是对第三段原因阐述部分的总结，通过以上分析，作者得出了电视在美国是为了反映社会和吸引大众这样的结论。故答案为A。