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听力原文：W: Well, I'm not quite sure how to put this. But I dropped the calculator you lent me, and now it doesn't work.
M: That's OK. It hasn't been working right for some time now.
Q: What does the man mean？
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数学运算
在这部分试题中，每道试题呈现一道算术式或是表述数字关系的一段文字，要求你迅速、准确地计算出答案。
3×104比4×103大多少？
Even plants can run a fever, especially when they are under attack by insects or disease.But【21】______ humans, plants can have their temperature 【22】______ from 3,000 feet away— straight up. A decade ago, 【23】______ the infrared(红外线的)scanning technology developed for military purpose and other satellites, physicist Stephen Paley 【24】______ a quick way to take the temperature of crops to determine 【25】______ ones are under stress. The goal was to let farmer 【26】______ target pesticide spraying 【27】______ rain poison on a whole field, which 【28】______ include plants that don't have the pest problem.
Even better, Paley's Remote Scanning Services Company could detect crop problem before they became 【29】______ to the eye. Mounted on a plane flown at 3,000 feet 【30】______ , an infrared scanner measured the heat emitted by crops. The data were 【31】______ into a color-coded map showing 【32】______ plants were running "fevers". Farmers could then spot spray, using 50 to 70 percent less pesticide than they 【33】______ would.
The bad news is that Paley's company closed down in 1984, after only three years. Farmers 【34】______ the new technology and long-term backers were hard 【35】______ . But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to 【36】______ into operation. Agriculture experts have no doubt the technology works. "This technique can be used 【37】______ 75 percent of agricultural land in the United States," says George Oerther of Texas A&M. Ray Jackson, who recently retired from the Depart ment of Agriculture, thinks 【38】______ infrared crop scanning could be adopted by the end of the decade. But 【39】______ Paley finds the financial backing 【40】______ he failed to obtain 10 years ago.
【21】
听力原文：W: Dr. Smith？ This is Jennifer Williamson from the Daily News. [7] I'd like to ask you some questions about the new official standard weight that you purchased.
M: I'd be happy to help you.
W: First of all, how is the standard weight used？
M: Well, [8] we use it to check the scales all over the country. Our department of weights and measures is a government agency. It's our responsibility to see that all the scales measure a kilogram accurately. So this is the way we use to adjust the scales.
W: How did you check the scales before？
M: We have an old standard weight. [9] It had to be replaced because it was imprecise. You see it was made of poor quality metal that was too porous. It absorbed too much moisture.
W: Oh. So when the weather was humid it weighed more and when it was dry it weighed less.
M: Exactly. And that variation can affect the standards of the whole country. So our department had the new weight made out of higher quality metal.
W: How much did it cost？
M: About 45 thousand dollars.
W: 45,000 dollars？ For one kilogram weight？ That's more expensive than gold. [10] Is it really worth that much？
M: [10] I'm sure it is. Industries depend on our government agency to monitor the accuracy of scales. So that when they buy and sell their products there is one standard. Think of the drug industry, for example, those companies rely on high accuracy scales to manufacture and package medicine.
What is the conversation mainly about？
Read the article below about " China Enters Cyberspace" and the questions.
For each question 13—18, mark one letter (A, B, C or D) on your Answer Sheet for the, answer you choose.
China Enters Cyberspace
Although research into the Internet began in the 1980's in China, it was not until the mid 90's that the country cautiously joined the information highway. These days however, it seems that China is ready to jump onto the " Net" with both feet. Personal Computers (PCs) are the hottest selling item on the market in major Chinese cities. At night, hundreds of Chinese who don't own a PC crowd into the now familiar Internet Cafes, where Net time costs US$ 3. 60 an hour. Web sites from around the world can be flashing on the screens of most high-tech companies, and many believe the Net is the perfect vehicle to transport China into the through the 21st century.
Even though Chinese government officials are somewhat concerned about the Western content on the Internet, it is clear they want to make use of what the superhighway has to offer. The Net is so appealing in improvement-obsessed China that usage is growing more than 40% a year. " It's a daily necessity, " says a Beijing Foreign Studies University student. " I plan to get online soon. I feel like I miss a lot of things and I don't want to lag behind." It seems everywhere you go the air is buzzing with talk of how to best use this modern technology.
Possibilities
The country has 350 million children to educate—what better vehicle than interactive televisions. The Finance Ministry needs to establish bank and savings accounts for China's 284 million worker—what more effective solution than smart cards？
Agricultural planners dream of more productive Chinese farms—how easier to send weather and agricultural information to 323 million farmers than over the Web？
To tap these benefits, China has embarked on a series of nine " golden projects" that will require state-of-the-art technology in everything from health-care to finance. By 2010 hundreds of millions of Chinese will be wired with a golden smart card, all part of health and financial network.
This smart card or identification card, will contain vital statistics about each person, and will automatically take a proportion of that persons salary as government " golden tax" via a microchip. Bryan Nelson, Mi-crosofts director in the region, says, " China is going to be the ultimate proof of all that the Internet can do. And the amazing thing is the Chinese seem to understand that better than some people in the West actually. " The window is still small though—only 3, 000, 000 Chinese have access to the Internet, vs. some 25 million in the U. S.—but it is opening quickly. Officials at China's Ministry of Posts and Telecommunications say they hope to have 4 million Chinese connected by 2000. At the same time, access to the outside world from China—once tightly controlled over a narrow pipeline has quadrupled in 1998, the result of newly liberalized government regulations. As late as 1996, most Net traffic to and from China had to flow through a single 56 kilobit—some U. S. homes have more bandwidth than that. Now china has a pipeline a hundred times wider, and the company ATT has just been hired to make it even bigger. Will china really have 4 million citizens on line by 2000？ " Try 20 million. " says Internet Cafe owner Charles Zhang, who has watched the governement exceed growth targets in everything from telephones to agricultural output. The theory behind Chinese leaders' enthusiasm is that technology and competitiveness are deeply linked.
Obstacles
There are plenty of obstacles to overcome between now and 2010. but the two biggest-limited ownership of both personal computers and the telephones—are fading. Perhaps the biggest obstacle to growth of computers and the Net in China is that Western-style. keyboards aren't set up to type Chin
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