57 What is the article mainly about?
(A) The NYPD has demonstrated a good use of technology in their security maintenance work.
(B) The NYPD has found a way to increase their budget.
(C) The NYPD and Microsoft Corp. are in good terms.
(D) The Domain Awareness System is the key to countering cyber crimes in New York.

demonstrate翻譯：展示, 顯示；表明, 展示，演示, 表達, 表達；表露；表現；顯露, 行進, 示威，遊行。

maintenance翻譯：工作, 維護，保養（保持道路、建築、機器設備等處於良好狀態的工作）, 金錢, （法律規定離婚後須定期支付用以供養孩子或前配偶的）撫養費，生活費。

An emergency call comes in about a possible bomb in lower Manhattan and an alert pops up on computer screens at the New York Police Department, instantly showing officers an interactive map of the neighborhood, footage（尤指表現一個事件的）一段影片，片段 from nearby security cameras, whether there are high radiation levels and whether any other threats have been made against the city. In a click, police know exactly what they're getting into. Such a hypothetical假定 scenario可能的事件 may seem like something out of a futuristic未來派 crime drama, but the technology is real, developed in a partnership between America's largest police department and Microsoft Corp., and the latest version has been quietly in use for about a year. The project could pay off取得成功 in more ways than one: The NYPD could make tens of millions of dollars under an unprecedented史無前例 marketing deal that allows Microsoft to sell the system to other law enforcement agencies and civilian平民 companies around the world. The city will get a 30 percent cut. The domain區域 Awareness System, known as the dashboard, gives easy access to the police department's  voluminous（衣服）肥大的，寬鬆 arrest records, emergency calls, more than 3,000 security cameras citywide, license plate readers and portable radiation detectors -- data that raises privacy concerns for some civil  liberty 自由, 不良行爲 groups. But the dashboard system mines existing tools and doesn't create any new surveillance. Right now, it is used only in NYPD offices, mostly in the counterterrorism unit. Eventually, the system could supply crime-fighting information in real time to officers on laptops in their squad小隊 cars and on mobile devices while they walk the beat.

一個緊急電話報告曼哈頓下城可能有炸彈，紐約市警察局的電腦螢幕上立即彈出警報，展示了一個互動地圖，顯示附近的監控攝像頭畫面、輻射等級是否過高，以及是否有針對城市的其他威脅。警察只需點擊一下，就能知道具體情況。

這種假設場景看起來像未來犯罪劇的情節，但這項技術是真實的。它由美國最大的警察局和微軟公司合作開發，最新版本已悄悄使用了一年。這項目可能從多方面獲利：紐約市警察局可以從微軟轉售該系統給其他執法機構和民用公司中獲得數千萬美元。城市會得到 30% 的分成。

這套「領域感知系統」（Domain Awareness System），俗稱「儀表板」，能輕鬆存取警局的龐大記錄，包括逮捕記錄、緊急電話、全市超過 3000 台監控攝像頭畫面、車牌讀取器及便攜輻射探測器——這些數據對某些公民自由團體來說可能引發隱私擔憂。但這套系統主要是挖掘現有工具和數據，並未創造新的監控方式。目前，該系統主要在警局內的反恐部門使用。未來，這套系統可以向巡邏中的警員實時提供犯罪數據，通過警車內的筆記本電腦或手機即時接收。

57. 這篇文章主要在討論什麼？
(A) 紐約市警察局展示了如何在安全維護中有效使用技術。
(B) 紐約市警察局找到增加預算的方法。
(C) 紐約市警察局和微軟的合作關係很好。
(D) 「領域感知系統」是紐約市對抗網絡犯罪的關鍵。

解析：
文章主要討論警察局如何利用技術提高安全維護工作，正確答案為 (A)。