20．Wireless technology is relatively young．The first generation has been around only since the early 1980s，when analog voice transmission （傳送，播送） networks were introduced．The second generation took over in the mid-'90s with the coming of digital wireless voice and data networks，giving us the capabilities that brought about the cell phone revolution we know today．Yet，as remarkable as the technology is，there's still plenty of room for improvement in the roaming capabilities and sound quality of cellular transmission．
Enter the so-called third generation---or 3G---which generally refers to networks capable of connecting to the Internet at speeds of 40times the rate of today's cell phones．This level of service promises Internet connections fast enough to download streaming audio and video files，swap digital photos，and hold teleconferences．It also uses the existing spectrum space more efficiently and increases the speeds with which basic data can be transmitted over wireless devices．
The truth is，most business data doesn't need the full-motion video provided by 3G．Generally，the goal is to transmit text data to employees who are attempting to keep in touch with the office while travelling or working from home．"It's simply untrue that current networks aren't good enough to adequately support the needs of your business，"says Erik Lassila，a managing director with Clearstone Venture Partners，a VC firm in Menlo Park，California．"Businesses should focus their technology investments in the area of wireless data transmission，"not streaming video capabilities．
Before giving in to the hype （吹噓宣傳，夸大其詞） that surrounds 3G，focus on mobile applications that can help your company gain customer loyalty．Assess how important it is for your business to access accurate inventory data，sales objectives and product details from anywhere via Web-connected cell phones and very small personal computers．Look only at those wireless systems that can enhance your company's business processes and show immediate payback．
It's true that mobile computing will help employees work smarter and more efficiently．But companies must be cautious in how they roll out wireless services and take the time to factor in the ROI before chasing the next big technology．
62．According to the passage，we are currently using the wireless technology ofB．
A．the first generation
B．the second generation
C．the third generation
D．the fourth generation
63．Most business data are in the form ofA．
A．text
B．video
C．audio
D．photo
64．People wrongly believe thatC．
A．we can never catch up with the development of wireless technology
B．most of the advanced wireless technologies are useless
C．current wireless technology cannot satisfy the needs of business
D．using wireless technology to conduct business is a waste of time
65．The author's main purpose is toC．
A．introduce the newest wireless technology
B．advise against businesses using new technology
C．show that current wireless technology is enough for business
D．explain how wireless technology can help business．
分析 本文主要講述了在現代社會，商業已經越來越依賴網絡，并且網絡的發展非常迅速，完全能夠滿足商業的發展．
解答 62．B 細節題．根據文章內容，The second generation took over in the mid-'90s with the coming of digital wireless voice and data networks，giving us the capabilities that brought about the cell phone revolution we know today．第二代無線科技在二十世紀90年代中期伴隨著無線聲音和數據網絡的產生而產生，給了我們創造手機革命的能力．結合選項，可推斷我們現在正處在無線科技第二代時期，故選B
63．A細節題．根據文章內容，The truth is，most business data doesn't need the full-motion video provided by 3G．Generally，the goal is to transmit text data to employees who are attempting to keep in touch with the office while travelling or working from home．"事實是，大多數的商業數據都不需要全動態視頻．總體說來，其目的是將信息數據傳輸給員工以讓其能追蹤商品情況．結合選項，故選A
64．C 細節題．根據文章內容，．"It's simply untrue that current networks aren't good enough to adequately support the needs of your business，"says Erik Lassila由此可知，人們認為現在的網絡不能很好的滿足支持現在商業的需求，這是不正確的．換言之，這是錯誤的，結合選項，故選C
65．C 寫作目的題．根據文章內容，主要講述了在現代社會，商業已經越來越依賴網絡，并且網絡的發展非常迅速，完全能夠滿足商業的發展．作者的寫作目的就是告訴大家這么一個事實，結合選項，故選C
點評 本文是一個科教類閱讀理解，題目涉及多道細節理解題，做題時結合原文和題目有針對性的找出相關語句進行仔細分析，結合選項選出正確答案．推理判斷題也是要在抓住關鍵句子的基礎上合理的分析才能得出正確答案，切忌胡亂猜測，一定要做到有理有據．
