【導讀】了人們的生活和工作。人們被其豐富無窮的信息資源、方便快捷的交流方式深深。但是，許多人沒有能力或條件購置上網(wǎng)所需的微機與線路，比如學生、流。動人口和收入較低者。為了滿足這些人群的上網(wǎng)需求，網(wǎng)吧應勢誕生了。民目前的收入情況分析，投資網(wǎng)吧是一大商機。從經(jīng)濟實用的角度出發(fā)，讓網(wǎng)吧。所有的計算機共享一條pstn、isdn、hdsl\ddn等線路訪問inter。慮局域網(wǎng)的組網(wǎng)方式、接入inter的方式、軟件硬件以及耗材。式，將決定投資者投入的資本多少、網(wǎng)絡的整體性能如何以及管理維護是否方便。以一家網(wǎng)吧為例。假如該網(wǎng)吧有機器21臺，其中一臺性能較好機器做服務器；星型網(wǎng)絡；局域網(wǎng)ip地址段至,掩碼，者可以自定，后者需要向isp申請；ddn專線10mb/s接入inter。網(wǎng)吧都采用10M光纖接入。惱，投資成本大、難以管理、維護困難；一個誤操作，文件就可能被刪除和破壞；人們帶來了諸多不便。如此多樣化高標準的需求也對網(wǎng)絡的運行、系

　　

【正文】 the boles of the hardwoods, where he leaned,.。 out of breath, the thumping of his own heart the only39。 . sound in an atmosphere silent and unwa ked as Earth39。s long, prehuman day. For a time he listened for any sound Ignacio might m ake searching for him。 there was none. He drew a deep breath then and said, Well, that39。s over, expecting Dr. Island to answer from somewhere。 there was only the green hush. The light was still bright and strong and nearly, shadowless, but some interior sense told him the day, was nearly over, and he noticed that such faint shades as he could see stretched long, hor izontal distortions of their objects. He felt no hunger, but he had fasted be39。 fore and knew on which side of hunger he stood。 he was not as strong as he had been only a day past, and by this time next day he would probably be unable to outrun Ignacio. He should, he now realized, have eaten the monkey he had killed。 but his stomach revolted at the thought of the raw flesh, and he did not know how he might build a fire, although Ignacio seemed to have done so the night before . Raw fish, even if he were able to catch a fish, would be as bad, or worse, than raw monkey。 he remembered his effort to open a coconuthe had failed, but it was surely not impossible. His mind was hazy as to what a coconut might contain, but there had to be an edible core, because they were eaten in books. He decided to make a wide sweep through the jungle that would bring him back to the beach well away from Ignacio。 he had several times seen coconuts lying in the sand under the trees. He moved quietly, still a little afraid, trying to think of ways to open the coconut w hen he found it. He imagined himself standing before a la rge and raggedly faceted stone, holding the coconut in both hands. He raised it and smashed it dow n, but when it struc k it was no longer a coconut but Maya39。s head。 he heard her nose cartilage break with a distinct, rubbery snap. Her eyes, as blue as the s ky above Madhya Pradesh, the sparkling blue sky of the egg, looked up at him, but he could no longer look into them, they retreated from his own, and it came to him quite suddenly that Lucifer, in falling, must have fallen up, into the fires and the coldness of space, never again to see the warm blues and browns and greens of Earth: 1 was watching Sa tan fall as lightning from heaven. He had heard that on tape somewhere, but he could not remember where. He had read that on Earth lightning did not e down from the clouds, but leaped up from the plane tary surface toward them, never to return. Nicholas. He listened, but did not hear his name again. Faintly water was babbling。 had Dr. Island used that sound to speak to him? He walked toward it and found a little rill that threaded a way among the trees, and followed it. In a hundred steps it grew broader, slowed, and ended in a long blind pool under a dome of leaves. . Diane was sitting on moss on the side opposite him。 she looked up as she saw him, and smiled. Hello, he said. Hello, Nicholas. I thought I heard you. I wasn39。t mistaken after all, was I? I didn39。t think I said anything. He tested the dark water with his foot and found that it was very cold. You gave a little gasp, I fancy. I heard it, and I said to myself, that39。s Nicholas, and I called you. Then I thought I might be wrong, or that it might be Ignacio. Ignacio was chasing me. Maybe he still is, but h think he39。s probably given up by now. The girl nodded, looking into the dar k waters of they pool, but did not seem to have heard him. He began to wor k his way around to her, climbing across the sna kelike roots of the crowding trees. Why does Ignacio want to kill me, Diane? Sometimes he wants to kill me, too, the girl said. But why? I think he39。s a bit frightened of us. Have you ever talked to him, Nicholas? Today I did a little. He told me a story about a pet fish he used to have. Ignacio grew up all alone。 did he tell you that? On= Earth. On a plantation in Brazil, way up the Amazon Dr. Island told me. I thought it was crowded on Earth. The cities are crowded, and the countryside closes to the cities. But there are places where it39。s emptie than it used to be. Where Ignacio was, there would have been Red Indian hunters two or three hundred years ago。 when he was there, there wasn39。t anyone,` just the machines. Now he doesn39。t want to be looked at, doesn39。t want anyone around him. Nicholas said slowly, Dr. Island said lots of people wouldn39。t be sick if only there weren39。t other people around all the time . Remember that? a Only there. are other people around all the time。 that39。s how the world is. Not in Brazil, maybe, Nicholas said. He was trying to remember something about Brazil, but the only thing he could think of was a parrot singing in a straw hat from the view cartoons。 and then a turtle and a hedgehog that turned into armadillos for the love of God, Montressor. He said, Why didn39。t he stay there? Did I tell you about the bird, Nicholas? She had been not listening again. What bird? I have a bird. Inside. She patted the flat stomach below her small breasts, and for a moment, Nicholas thought she had really found food. She sits in here. She has tangled a nest in my entrails, where she sits and tears at my breath with her beak. I look healthy to you, don39。t I? But inside I39。m hollow and rotten and tur ning brown, dirt and old feathers, oozing away. Her beak will break through soon. Okay. Nicholas turned to go. I39。ve been drinking water here, trying to drown her. I think I39。ve swallowed so much I couldn39。t stand up now if I tried, but she isn39。t even wet, and do you know som ething, N icholas? I39。ve found out I39。m not really me, I39。m her. Turning back Nicholas asked, When was the last time you had anything to eat?