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7.The first mobile telephones used a system,or network,called 1G.It was the"first generation"of technology.This allowed one person to call and talk to another person,but that was all.By the early 1990s,the second generation,or 2G network,came into use.It allowed talking and sending text messages.By that time,cell phones were much smaller and cost much less.
Third-generation mobile phones,known as 3G.Data speed in 3G networks is much quicker.This means users can have high-speed Internet access and enjoy video and CD-quality music on their phones.
"Mobile data is not a dream; it's not an option but a requirement,"said Len Lauer,head of a US communications company,Sprint PCS,at a 3G conference in Bangkok earlier this month.
With 3G,you can forget about text messages telling you yesterday's news,a 3G phone can receive video news programs,updated four times a day.Internet access will also be much quicker,making it easier to surf the Web on your phone than on your computer at home.
Don't worry about getting lost.3G phones offer map services so you can find a new restaurant just by pressing a few keys on your handset.
However,the most impressive part of 3G technology is video calling.With live two-way video communication,you can have face-to-face talks with friends and family on your mobile phone.
Within the past two years,the 4G network has come into use.It permits cell phones to work much faster and have much more information.Modern cell phones can even act as small televisions.They can show movies and live sporting events.
As the networks have gotten more complex,the telephones have gotten smaller,lighter and less costly.Many electronics stores in the United States even give away the newest cell phones.But customers must agree to pay to use the network that sends their calls from one place to another.
It is interesting to imagine what the 5G and 6G network cell phones of the future will be able to do.
Title (71)The Development/Introductionof mobile telephones
1G(72)call and talk to another person
2Gtalk and send(73)text messages
3G(74)Advantages?data speed:(75)quicker
?video and CD-quality music
?video news programs:updated (76)four times a day
?Internet access:quicker and easier
Impressive
(77)functions
?offer map services,helping you find your way
?provide two-way video communication with (78)friends and family
4G?work much faster and (79)havemuch more information
?act as small televisions
?show movies and(80)live sporting events

分析 本文主要讲述了手机的发展,经历了四代,介绍了每一代手机的功能.

解答 71.The Development/Introduction   72.call and talk 73.text messages  74.Advantages 
75.quicker 76.four times  77.functions  78.friends and family  79.have  80.live
71.The Development/Introduction   根据文章第一  段The first mobile telephones 和最后一段It is interesting to imagine what the 5G and 6G network cell phones of the future will be able to do.可知文章讲述了手机的发展,甚至于想象第五,六代手机的功能.
72.call and talk  根据文章第一  段This allowed one person to call and talk to another person,but that was all.可知第一代手机是用来聊天和打电话的.
 73.text messages  根据文章第一  段It allowed talking and sending text messages可知第二代手机是用来发短信的.
74.Advantages     根据文章第二  段Data speed in 3G networks is much quicker.数据传输更快和第四段making it easier to surf the Web on your phone than on your computer at home上网更方便,可知第三代手机有了更大的优势.
75.quicker   根据文章第二  段Data speed in 3G networks is much quicker可知数据传输更快.
76.four times   根据文章第四  段updated four times a day.可知视频新闻一天更新四次.
77.functions   根据文章第五  段the most impressive part of 3G technology is video calling.可知第三代手机最大的功能是视频对话.
78.friends and family   根据文章第五  段With live two-way video communication,you can have face-to-face talks with friends and family on your mobile phone.
可知可以和朋友家庭成员视频聊天.
79.have    根据文章倒数第三  段It permits cell phones to work much faster and have much more information.可知允许手机允许更快和拥有更大信息.
80.live   根据文章倒数第三  段They can show movies and live sporting events.可知第四代手机可以直播体育节目.

点评 任务型阅读首先是一篇阅读理解.为了确保对文章准确深刻理解,同时提高解题速度,最终能顺利完成该项任务,考生必须做到:
       1.注重平时词汇记忆,熟练掌握考纲词汇中常用词汇的词性转化.
       2.了解文章的结构,把握全篇的文,即句与句、段与段之间的逻辑关系.
       3.加强限时阅读训练,尤其是词数在400~550之间的较长篇幅的阅读训练.
       4.系统训练,循序渐进,最终达到相应的解题能力要求.

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