第3部分：概括大意与完成句子

下面的短文后有2项测试任务：第23~26题要求从所给的6个选项中为第2～5段每段选择1个最佳标题；第27~30题要求从所给的6个选项中为每个句子确定1个最佳选项。

The Supercomputer Network

1 Recently．Ten laboratories run by governments in different parts of the world have become linked．Their computers have been connected so they cantalkto each other． This may not seem very dramatic news，but it is the beginning of a development that will increase the power of the Internet tremendously．

2 The Internet is an interconnectedsystem 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 downloadfiles，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 calledthe grid，and it will be a network of computers that are linked together．Thegridwill 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．Thegridwill 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 Thegridcan be compared to having an efficient personal assistant．You can give your assistant a task andhewill 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 thegridin 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 ongridprojects 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________.