题目内容
2.Third-generation mobile phones,known as 3G,are the next big step for the telecom industry.Data speed in 3G networks is much quicker than that in present technology.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 U.S.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.
Face-to-Face video calls
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.
Many European countries have already launched the services.In May 2000the U.S.Government issued five license to run 3G wireless services,while the first 3G phones arrived in Italy in March this year.
International telecom companies can't wait to sell 3G in China,the world's largest mobile telecommunications market.But they will have to be patient.At the moment,China is busy testing its 3G-based technologies,networks and services.This will be followed by a trial period before the phones can finally hit the shops.
"We need to create a pool of 3G customers before the large-scale commercial launch of the service,"said Fan Yunjun,marketing manager for Beijing Mobile."We expect that the 3G licences will be issued late next year."
Third-generation mobile phones (3G mobile phones) | |
(71)Advantages | 14.Data speed:(72)quicker than presnet technology. 15.Video and (73)CD-quality music. 16.Video news programs:(74)updatedfour times a day. 17.Internet access:quicker and (75)easier. |
Impressive functions | a.Offer(76)map services,helping you find way. b.Provide two-way video(77)communication. |
3G phones in China | a.China is busy(78)testingits 3G-based technologies,Networks and servies. b.3G phones should go through a (79)trialperiod Before being put into market. c.3G phones are expected to be seen (80)latenext year. |
分析 本文主要讲述3G手机的优势和功能,以及在中国的前景.
解答 71.Advantages 72.quicker 73.CD-quality 74.updated 75.easier
76.map 77.communication 78.testing 79.trial 80.late
71.Advantages优势.首先总结3G手机的优势,共四点.
72.quicker.3G手机数据传输速度比普通技术快,填quicker.
73.CD-quality.由第一段中…enjoy video and CD-quality music on their phones可知,填CD-quality.
74.updated.由第三段中…updated four times a day可知,填"最新的".
75.easier.由第三段中…Internet access will also be much quicker,making it easier to surf the Web…可知,填"更容易的".
76.map.由第四段中3G phones offer map services…可知,填"地图".
77.communication.由第五段中With live two-way video communication…可知,填"通信、信息交流".
78.testing.由倒数第二段中At the moment,China is busy testing its 3G-based technologies…可知,填"测试".
79.trial.由倒数第二段中This will be followed by a trial period…可知,填"尝试".
80.late.由短文最后一句话We expect that the 3G licenses will be seen late next year可知,填late.
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.
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Skin contains something called melanin,which determines a person's skin colour.The more melanin a person has,the darker his or her skin will be.The amount of and production of melanin are controlled by genes,but can be affected by other things,such as sunlight.If a person lives in a place with strong sunlight,his or her skin will protect itself by producing more melanin,making the skin darker.In a place with less sunlight,a person's body will produce less melanin,making the skin lighter.
Skin colour is also affected by another source-vitamin D.Humans all need vitamin D to build bones.People can get it by eating foods such as fish and milk,or from sunlight,which causes vitamin production in the skin.Melanin protects skin by absorbing sunlight,so sunlight absorbed by melanin cannot be used for vitamin D production.Therefore,a dark-skinned person will produce less vitamin D than a light-skinned person when they receive the same amount of sunlight.
The connection between vitamin D production and skin colour is clear when we look at evolution.The earliest humans lived in Africa,their dark skin covered with hair.When they moved to places that had less sunlight,their bodies produced less vitamin D because of their dark skin.As a result,their skin made less melanin,so they could get enough sunlight to produce vitamin D.Their skin gradually got lighter and they lost hair.Now,people who live in areas with strong sunlight,like Africa,have darker skin,while people living in other areas have lighter skin.The exception to this is the Inuit,who live in a place with little sunlight,but have dark skin because they eat a lot of fish and have enough vitamin D.
Evolution has given us a rainbow of skin colours.Humans have always had melanin to determine our skin colour.What has changed through history is the environment where we have lived.This has in turn changed our melanin production,and eventually,skin colour.
A World of Skin Colour
Brief introduction | People living in a particular area usually have the (71)sameskin colour and there are many different skin colours in the world. |
Reasons for skin colour | The reasons for different skin colours mainly (72)lie/consist in biology and history. |
Biological reasons | The amount of melanin,by which a person's skin colour is (73)determined,varies from people to people.The more melanin a person has,the (74)darkerhis or her skin will be. Vitamin D is another source (75)affectingskin colour.Vitamin D is necessary for humans to build bones.Sunlight contributes to vitamin D production in the skin. |
(76)Historical reasons | The earliest people in Africa had dark skin with hair covering it because the sunlight is very strong.. When they moved to places where they could not get enough sunlight to (77)producevitamin D,their skin colour became lighter. Generally speaking,people in areas with strong sunlight,have darker skin (78)whilepeople in other areas have lighter skin. |
(79)Conclusion/Summary | Melanin (80)playsan important role in our skin colour.With our living environment changing,melanin production is changed,which leads to the changes in our skin colour. |
A. | may | B. | need | C. | should | D. | must |