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 本文主要講述了手機(jī)的發(fā)展,經(jīng)歷了四代,介紹了每一代手機(jī)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   根據(jù)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.可知文章講述了手機(jī)的發(fā)展,甚至于想象第五,六代手機(jī)的功能.
72.call and talk  根據(jù)文章第一  段This allowed one person to call and talk to another person,but that was all.可知第一代手機(jī)是用來(lái)聊天和打電話的.
 73.text messages  根據(jù)文章第一  段It allowed talking and sending text messages可知第二代手機(jī)是用來(lái)發(fā)短信的.
74.Advantages     根據(jù)文章第二  段Data speed in 3G networks is much quicker.?dāng)?shù)據(jù)傳輸更快和第四段making it easier to surf the Web on your phone than on your computer at home上網(wǎng)更方便,可知第三代手機(jī)有了更大的優(yōu)勢(shì).
75.quicker   根據(jù)文章第二  段Data speed in 3G networks is much quicker可知數(shù)據(jù)傳輸更快.
76.four times   根據(jù)文章第四  段updated four times a day.可知視頻新聞一天更新四次.
77.functions   根據(jù)文章第五  段the most impressive part of 3G technology is video calling.可知第三代手機(jī)最大的功能是視頻對(duì)話.
78.friends and family   根據(jù)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員視頻聊天.
79.have    根據(jù)文章倒數(shù)第三  段It permits cell phones to work much faster and have much more information.可知允許手機(jī)允許更快和擁有更大信息.
80.live   根據(jù)文章倒數(shù)第三  段They can show movies and live sporting events.可知第四代手機(jī)可以直播體育節(jié)目.

點(diǎn)評(píng) 任務(wù)型閱讀首先是一篇閱讀理解.為了確保對(duì)文章準(zhǔn)確深刻理解,同時(shí)提高解題速度,最終能順利完成該項(xiàng)任務(wù),考生必須做到:
       1.注重平時(shí)詞匯記憶,熟練掌握考綱詞匯中常用詞匯的詞性轉(zhuǎn)化.
       2.了解文章的結(jié)構(gòu),把握全篇的文,即句與句、段與段之間的邏輯關(guān)系.
       3.加強(qiáng)限時(shí)閱讀訓(xùn)練,尤其是詞數(shù)在400~550之間的較長(zhǎng)篇幅的閱讀訓(xùn)練.
       4.系統(tǒng)訓(xùn)練,循序漸進(jìn),最終達(dá)到相應(yīng)的解題能力要求.

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