填空题

Television is one of the most commonly seen entertainment device in people’s daily life. Probably people will never think about it. However, TV—the most (47) and persuasive of modem technologies, marked by rapid change and growth—is moving into a new era, an era of (48) sophistication and versatility, which (49) to reshape our lives and our world. It is an electronic (50) of sorts, made possible by the marriage of television and computer technologies.
The word "television", (51) from its Greek (tele: distant) and Latin (visio: sight) roots, can (52) be interpreted as sight from a distance. Very simply put, it works in this way: through a sophisticated system of electronics, television provides the capability of (53) an image into electronic impulses, which can be sent (54) a wire or cable. These impulses, when fed into a receiver (a television set), can then be electronically reconstituted into that same image.
Television is more than just an electronic system, however. It is a means of expression, as well as a (55) for communication, and as such becomes a powerful tool for reaching other human beings. The field of television can be divided into two categories determined by its means of (56) . First, there is broadcast television. And second, there is non-broadcast television.

• A) derivedI) operating
• B) throughJ) literally
• C) during K) pervasive
• D) backslide L) promises
• E) revolution M) freely
• F) extraordinary N) converting
• G) transmission O) vehicle
• H) limited