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、阅读理解（本大题共5小题，共0分） A A linguist, an expert on languages, is always listening, never off-duty. I invited a group of friends round to ld relax and have a drink. I turned on the recorder and each in turn counted from one to twenty in their best accents. When it was over, I turned the recorder off and brought round the drinks. The rest of the evening was spent in total relaxation. I joined them in talking and joking freely, leaving them only for a telephone call which lasted some time. Or at least that is how it would appear. For, of coarse, the microphones were not connected to the recorder in the middle of the room at all but to another one in the bedroom. My friends, having seen the recorder before them turned off, paid no more attention to the microphones a few inches from their mouths, thus giving excellent sound quality. It meant that I was able to get as natural a piece of talk as it would be possible to find. I should add, perhaps, that I did tell my friends what had happened to them, after the recording was over, and asked them whether it should be destroyed. None of them wanted to---but for some years after that, it always seemed that when it came to buying drinks, it was I who paid for them. Linguistic research can be a very expensive business. 1. The writer asked his friends to count, from one to twenty because he _____. | 
