久久久国产精品秘人口麻豆|永久免费AV无语国产|人成电影免费中文字幕|久久AV嫩草影院2

    1. <dfn id="yitbn"><samp id="yitbn"><progress id="yitbn"></progress></samp></dfn>

          <div id="yitbn"></div>

          1. 首頁 考試吧論壇 Exam8視線 考試商城 網絡課程 模擬考試 考友錄 實用文檔 求職招聘 論文下載
            2013中考 | 2013高考 | 2013考研 | 考研培訓 | 在職研 | 自學考試 | 成人高考 | 法律碩士 | MBA考試
            MPA考試 | 中科院
            四六級 | 職稱英語 | 商務英語 | 公共英語 | 托福 | 托業(yè) | 雅思 | 專四專八 | 口譯筆譯 | 博思
            GRE GMAT | 新概念英語 | 成人英語三級 | 申碩英語 | 攻碩英語 | 職稱日語 | 日語學習 |
            零起點法語 | 零起點德語 | 零起點韓語
            計算機等級考試 | 軟件水平考試 | 職稱計算機 | 微軟認證 | 思科認證 | Oracle認證 | Linux認證
            華為認證 | Java認證
            公務員 | 報關員 | 銀行從業(yè)資格 | 證券從業(yè)資格 | 期貨從業(yè)資格 | 司法考試 | 法律顧問 | 導游資格
            報檢員 | 教師資格 | 社會工作者 | 外銷員 | 國際商務師 | 跟單員 | 單證員 | 物流師 | 價格鑒證師
            人力資源 | 管理咨詢師 | 秘書資格 | 心理咨詢師 | 出版專業(yè)資格 | 廣告師職業(yè)水平 | 駕駛員
            網絡編輯 | 公共營養(yǎng)師 | 國際貨運代理人 | 保險從業(yè)資格 | 電子商務師 | 普通話 | 企業(yè)培訓師
            營銷師
            衛(wèi)生資格 | 執(zhí)業(yè)醫(yī)師 | 執(zhí)業(yè)藥師 | 執(zhí)業(yè)護士
            會計從業(yè)資格考試會計證) | 經濟師 | 會計職稱 | 注冊會計師 | 審計師 | 注冊稅務師
            注冊資產評估師 | 高級會計師 | ACCA | 統(tǒng)計師 | 精算師 | 理財規(guī)劃師 | 國際內審師
            一級建造師 | 二級建造師 | 造價工程師 | 造價員 | 咨詢工程師 | 監(jiān)理工程師 | 安全工程師
            質量工程師 | 物業(yè)管理師 | 招標師 | 結構工程師 | 建筑師 | 房地產估價師 | 土地估價師 | 巖土師
            設備監(jiān)理師 | 房地產經紀人 | 投資項目管理師 | 土地登記代理人 | 環(huán)境影響評價師 | 環(huán)保工程師
            城市規(guī)劃師 | 公路監(jiān)理師 | 公路造價師 | 安全評價師 | 電氣工程師 | 注冊測繪師 | 注冊計量師
            化工工程師 | 材料員
            繽紛校園 | 實用文檔 | 英語學習 | 作文大全 | 求職招聘 | 論文下載 | 訪談 | 游戲
            英語四六級考試

            2009年12月大學英語六級考試模擬考卷(恩波)

            來源:恩波 2009-12-16 9:50:47 考試吧:中國教育培訓第一門戶 模擬考場
            以下試題的難易程度,考試題型,均與標準試卷一致。讓考生準確把握考試方向。

              How-might this manifest itself? Heylighen speculates that it might turn the Internet into a self-aware network that constantly strives to become better at what it does, reorganizing itself and filling gaps in its own knowledge and abilities.

              If it is not already semiconscious, we could do various things to help wake it up, such as requiring the net to monitor its own knowledge gaps and do something about them. It shouldn’t be something to fear, says Goertzel;" The outlook for humanity is probably better in the case that an emergent, coherent and purposeful Internet mind develops. "

              Heylighen agrees, but warns that we might find it a little disappointing. " We probably would not notice a whole lot of a difference, initially, "he says.

              And when might this begin? According to Heylighen, it all depends on Internet fashion trends. If the effort that has gone into developing social networking sites goes into developing Internet consciousness, it could happen within a decade, he says.

              How Big Is the Net?

              Recent estimates suggest that well over1 billion people rely on computers to access the Internet. Yet there are also a billion or so other people who use cellphones to visit cyberspace, making them as much a part of the online community as someone surfing from a PC.

              That the Internet is vast is undoubted. In July 2008, web surfers were introduced

              Cuil. com, billed by its designers as "the world's biggest search engine". It indexed an impressive 120 billion pages, but shortly before its launch Google announced that its systems had registered a trillion unique pages.

              Even this might represent a fraction of what is out there. Some estimates suggest that there could be hundreds of times more information stored on the Internet than Google or Cuil have so far indexed.

              One thing's for sure: the Internet and its contents will continue to grow rapidly. According to Google, several billion web pages are added each day. And in the minute it has taken you to read this, the total has leapt by about 700,000.Index that!

              Where Are the Net's Dark Corners?

              If your emails mysteriously disappear, or your favorite website is suddenly unobtainable, you might have run into one "black hole". Though nowhere near as destructive as their cosmological(宇宙論的) cousins, information black holes can create all kinds of problems for surfers. Essentially they are points on the network at which data packets simply disappear due to broken connections, say, or misconfigured routers---devices that maintain lists of addresses and which help direct Internet traffic. A team including computer scientist Ethan Katz-Bassett at the University of Washington in Seattle has detected almost 1. 5 million black holes since it began looking in 2007. The majority persist for over 2 hours, he says. Unfortunately it is tough to predict where they will appear next, so it's hard for the average surfer to avoid them.

              Far easier to avoid are a kind of online chat-room called Internet Relay Chat (IRC) channels. Though the majority are legitimate, a few IRC channels have a very dark reputation, and are run as open markets for stolen goods. One 2007 survey found $37 million worth of illegal stuff in IRC channels, including 80,000 credit card numbers and bank account details. And if that is not bad enough, some of these chat-rooms are also used by hackers to send commands to their networks of evil software bots, or botnets. When a PC is infected by a virus or evil software it may be hijacked and used as part of a botnet to launch spam or cyber-attacks elsewhere.

            上一頁  1 2 3 4 5 6 7 8 9 10  ... 下一頁  >> 
              相關推薦:2009年12月英語六級考試沖刺模擬試題匯總
                   免費版:2009年12月英語六級(CET-6)模擬卷(2套)
            文章搜索
            中國最優(yōu)秀四六級名師都在這里!
            趙建昆老師
            在線名師:趙建昆老師
               2003年初進入新東方學校,開始接近7年講臺生涯。目前教授課程有:...[詳細]
            版權聲明:如果英語四六級考試網所轉載內容不慎侵犯了您的權益,請與我們聯系800@eeeigo.com,我們將會及時處理。如轉載本英語四六級考試網內容,請注明出處。