[单项选择]

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In promising to fuse media as diverse as television, telephone communication, video games, music and data transmission, the era of digital convergence goes better than yesterday’s celebrated "information superhighway". Yet achieving this single technology is far from straightforward. There are currently three major television broadcast standards, and they are all incompatible with each another. But this is nothing compared to the many technologies supporting the Internet, each with a different bandwidth and physical media. The problems faced in designing platforms and communication systems that will be accepted across the world can appear insuperable. Even once global standards are assured, however, a further obstacle lies in wait. The Internet is plagued by long, erratic response times because it is a pull technology, driven by patterns of user demands. Push technology, on the other hand, reverses the relation-sh
A. It combines various media such as television and Internet together.
B. If achieved, it will be better than the well-reputed "information superhighway".
C. The technology is difficult to achieve as it seems impossible to establish platforms.
D. It is simply a technology that will play an important role in our lives.