听力填空
　　The ideal companion machinewould not only look, feel, and sound friendly but would also be programmed tobehave in an agreeable manner. Those qualities that make interaction with otherpeople enjoyable would be simulated as closely as possible, and the machinewould appear to be charming stimulating, and easygoing. Its informalconversational style would make interaction comfortable, and yet the machine wouldremain slightly unpredictable and therefore interesting. In its first encounterit might be somewhat hesitant and unassuming, but as it came to know the userit would progress to a more relaxed and intimate style. The machine would notbe a passive participant but would add its own suggestions, information, andopinions; it would sometimes take the initiative in developing or changing thetopic and would have a personality of its own. The machine would conveypresence. We have all seen how a computer’s use of personal names oftenfascinates people and needs them to treat the machine as if it were almosthuman. Such features are easily written into the software. By introducing adegree of forcefulness and humor, the machine could be presented as a vivid andunique character. Friendships are not made in a day, and the computer would bemore acceptable as a friend if it simulated the gradual changes that occur whenone person is getting to know another. At an appropriate time it might alsoexpress the kind of affection that stimulates attachment and intimacy.