rnet tremendously.
2 the internet is an interconnected(互联)system of networks that connects computers round the world and facilitates the transmission and exchange of information. the way that you use the internet is by accessing this network.this depends on the power that your system allows you to use.the power of your computer is responsible for how fast you can download(下载)files，how much data you can store，etc.if your computer is old and slow.accessing the information can be very difficult.
3 the new development in information technology has been called“the grid”(网格技术)，and it will be a network of computers that are linked together.the“grid”will work in a different way from the internet，enabling you to get the power of the biggest computers in the world on your computer.accessing the information will no longer depend on the power of your computer.the idea is that while you access information，you will also have access to the power of the bigger computer stations.
4 one advantage of this revolutionary idea is that geographical location will become irrelevant.the“grid”will decide which are the best parts of a worldwide network to do the job you want.this means that you may be accessing a computer in japan to solve a problem in alaska.
5 the“grid”can be compared to having an efficient personal assistant.you can give your assistant a task and“he”will do it for you.the assistant will do the preliminary research，collect the data，compare them and decide on the best course of action by accessing any of the computer centres in the “grid” that happen to have the relevant information.all you have to do is assign the task，sit back and wait.
6 at present，possible applications of the“grid”in scientific research are being explored.while it has taken about fifteen years for internet use to become widespread，experts believe that the “grid” could be up and running for private individuals far more quickly.scientists working on“grid”projects are convinced that it will be as widely used as the web in the next ten years.
23 paragraph 2_________
24 paragraph 3_________
25 paragraph 4_________
26 paragraph 5_________
27 traditionally the power of your computer determines how fast you can access__________.
28 the “grid’’ will enable you to get on your computer the power of _________ in the world.
29 the “grid” would be like __________, who can perform your tasks efficiently.()
30 it is believed that the widespread use of the “grid”will become possible in the next________. 第4部分：阅读理解(第31-45题，每题3分，共45分)
下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。
第一篇centers of the great european cities
the centers of the great cities of europe are meeting places by tradition people gather there to drink coffee and chat late into the night.a mixture of locals and tourists make for’an exciting，metropolitan atmosphere.
squares，plazas(广场)a
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