题目内容
SECTION B PASSAGES
Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow.
听力原文： The Internet is a global web of computers connected to each other by wires, cables, satellites, radio waves, and waves of light. If you look at a map of big cities, smaller towns, and scattered houses, each is connected by roads, railways, rivers and other things. This is similar to the Internet.
The "big cities" of the Internet are the server computers of Yahoo, Tripod, AOL, and other networks. They often have search engines, e-mail services, shopping, entertainment, and other services that draw mil- lions of people from all around the world just like the post offices, stores, movie theaters, and other places do in the communities where we live.
Other computers on the Internet are also part of these online towns. Local banks often provide access to account information with their computers. Businesses like Wal-Mart, Lowes, and many others have computers that provide online stores where people can purchase different items. Many colleges and universities offer on- line classes that allow people to get their degrees on the Internet. Yon can often pay your cable bill, credit card payment, electric bill and other payments online. You can even buy groceries online at places like NetGrocer. You can do just about anything online that you can offline.
The speaker compares the Internet to______.
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The nuclear energy is released at the Sun's center as high - energy gamma radiation, a form. of electro- magnetic radiation like light and radio waves only of very much shorter wavelength. This gamma radiation is absorbed by atoms inside the Sun, to be reemitted at slightly longer wavelengths. This radiation, in its turn, is absorbed and reemitted. At the energy filters through the layers of the solar interior, it passes through the X- ray part of the spectrum, eventually becoming light. At this stage, it has reached what we call the solar surface, and can escape into space, without being absorbed Farther by solar atoms. A very small fraction of the Sun's light and heat is emitted in such directions that, after passing unhindered through interplanetary space, it hits the Earth.
A simple magnifying glass, focusing the Sun's rays, can scoarch, a piece of wood or set a scrap of paper on fire. Solar radiation can also be concentrated on a much larger scale. It can burn a hole through thick steel plate, for example, or simulate the thermal shock of a nuclear blast. It can, that is, with the help of a super reflector of the sort that has been set up by French scientists high in the Pyroness. The world’s largest solar furnace is a complex of nearly 20,000 mirrors. It can concentrate enough sunlight to create’temperatures in excess of 6000 degrees Fahrenheit.
The furnace's appearance is as spectacular as its power. Its glittering eight - story - high reflector towers over very old houses. Anchored against a concrete office and laboratory building, the huge reflector consists of nearly 9000 separate mirrors. For the furnace to operate, these small mirrors must be adjusted so that their light will meet exactly at a focal point 59 feet in front of the giant reflector.
What does the passage mainly discuss？
What is the mass demonstration about？
听力原文： The tone of this report is significantly more downbeat than the recent assessment published by the International Monetary Fund. Where the IMF spoke of global recovery—with risks that things might turn out worse— UNCTAD dwells on the causes for concern. The IMF identifies stronger economic growth in the United States in recent months. The UNCTAD report worries that consumer spending there might be losing momentum.
What is the news item mainly about？
SECTION C NEWS BROADCAST
Directions: In this section, you will hear several news items. Listen to them carefully and then answer the questions that follow.
听力原文： Today, the two 29-year-old aid workers are Italy's national heroines. The delighted faces of Simona Pail and Simona Torretta smile from every newspaper. Arriving in Rome late last night to a jubilant crowd and tearful relatives, the woman said they had been treated well by their captors during their three-week imprisonment. The identity of their kidnappers, though, is still unclear.
What is the news item mainly about？
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