2．Mobile phone users will be able to charge（充電） their devices wirelessly for the first time from 2015．
Fujitsu，the Japanese technology company，has created a system capable of charging quite a few portable electronic devices in the meanwhile，such as mobile phones，digital cameras and laptop computers without the need for cable connections．Electric cars users may also eventually be able to charge their vehicles wirelessly using the same technology according to Fujitsu，which presented a system at an Institute of Electronics，Information and Communication Engineers Conference at Osaka Prefecture University．
Claiming to be the world's first of its kind，the technology works on the basis of the transmission of electricity using magnetic fields between the charger and the electronic device．The system enables wireless charging at distances of up to several metres，with the final aim of installing public"charging spots"on the streets in order to enable easy charging around the clock．
Scientists at Fujitsu Laboratories are planning to commercially sell products including the new wireless charging system as early as 2012but did not make it clear how much they would cost．"This technology makes it possible to add compact wireless charging functions into mobile phones and enabling several portable devices to be charged at the same time without any restrictions（限制）on their position in association with the charger，"the company said in a statement．
The growing popularity of portable electronic devices ranging from iPads to e-readers is expected to fuel a boom in wireless recharging technology developments over the coming decade．
Mobile phone users in Japan can currently fill up their batteries using disposable（一次性的）portable plug-in battery-operated devices--available at most train stations and convenience stores--although phone companies warn any use for too long can damage the phones．
The new system displayed by Fujitsu，however，is significantly advanced and represents the next generation of portable recharging systems using highly tuned wireless technology．The company added，"We are also looking at applying the results of this work to fields other than portable electronics，including power transmission between circuit boards or computer chips，and providing mobile charging systems for electric cars．"
68．The writer's purpose of writing the passage isD．
A．to analyze the current international situation
B．to warn people against using disposable portable plug-in battery-operated devices
C．to encourage customers to purchase the new charging devices
D．to introduce a new technology applied to charging wirelessly
69．According to the new technology，electricity can be transmitted byA．
A．using magnetic fields
B．using the electronic devices
C．using batteries
D．using disposable portable plug-in battery-operated devices
70．What is certain according to the passage is thatC．
A．the charging system can serve one portable electronic device at a time
B．a(chǎn)ll the convenience stores in Japan can provide the charging service now
C．wireless charging works within a distance of up to several metres
D．the new product doesn't look promising．
分析 本文主要介紹日本富士通實(shí)驗(yàn)室的研究人員開發(fā)了一種無(wú)線充電系統(tǒng)，可同時(shí)給一定范圍內(nèi)的手機(jī)、數(shù)碼相機(jī)及手提電腦等各種移動(dòng)設(shè)備充電，無(wú)需使用電纜．
解答 68-70 DAC
68．D 主旨大意題．根據(jù)第二段Fujitsu，the Japanese technology company，has created a system capable of charging quite a few portable electronic devices in the meanwhile，such as mobile phones，digital cameras and laptop computers without the need for cable connections可知，日本富士通實(shí)驗(yàn)室的研究人員開發(fā)了一種無(wú)線充電系統(tǒng)，可同時(shí)給一定范圍內(nèi)的手機(jī)、數(shù)碼相機(jī)及手提電腦等各種移動(dòng)設(shè)備充電，無(wú)需使用電纜．故選D．
69．A 細(xì)節(jié)理解題．根據(jù)第三段Claiming to be the world's first of its kind，the technology works on the basis of the transmission of electricity using magnetic fields between the charger and the electronic device可知，該系統(tǒng)被認(rèn)為是世界上首個(gè)無(wú)線充電系統(tǒng)，其工作原理是利用充電器和電子設(shè)備之間的磁場(chǎng)來(lái)傳輸電能．故選A．
70．C 細(xì)節(jié)理解題．根據(jù)第三段The system enables wireless charging at distances of up to several metres，with the final aim of installing public"charging spots"on the streets in order to enable easy charging around the clock可知，實(shí)現(xiàn)無(wú)線充電的范圍最遠(yuǎn)能達(dá)到數(shù)米，在街道上安裝充電點(diǎn)可日夜充電．故選C．
點(diǎn)評(píng) 高考中選用的科技文往往反映的是當(dāng)今人類最先進(jìn)的科技水平和最新的科研成果．我們閱讀它的過(guò)程其實(shí)就是學(xué)習(xí)科學(xué)知識(shí)，掌握科技信息的過(guò)程．然后，理解文章，分析文章，以閱讀材料所提供的科學(xué)事實(shí)為依據(jù)，同時(shí)得出的結(jié)論還應(yīng)符合基本的科普常識(shí)，在細(xì)心對(duì)照基礎(chǔ)上，經(jīng)過(guò)一番分析、綜合，然后就要根據(jù)題目要求對(duì)選項(xiàng)作出正確判斷了，這些判斷包括選項(xiàng)的表達(dá)是否符合原文的意思，對(duì)概念，文句的理解是否正確，對(duì)要點(diǎn)歸納是否全面等，從而排除錯(cuò)誤選項(xiàng)，選擇最合適的答案．
