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新东方网英语四级频道为大家整理了英语四级阅读练习，希望对大家备考英语四级有帮助
There are people in Italy who can’t stand soccer. Not all Canadians love
hockey. A similar situation exists in America, where
The first person to use the sun's energy on a large scale was the Greek,
Archimedes. He used it to set fire to an attacking Roman fleet at Syracuse in
212 B. C.. He did this by means of a burning glass composed of small square
mirrors made to move in all directions on hinges (转轴). In the early twentieth
century, solar energy was used to power water distillation plants in Chile and
irrigation pumps in Egypt.
Today over ninety-eight per cent of our energy comes from fossil fuels;
coal, oil and natural gas. But coal and oil are not only fuels. They are also
important raw materials for our chemical industries. People now think we should
limit their use as fuel, otherwise the world's supply will soon run out.
Consequently, much research is being done into the practical use of the sun for
heating (and cooling) buildings. The less fossil fuel we use now, the more we
will have for the future.
Solar energy is transmitted from the sun—through space—to earth by
electromagnetic radiation. It must be converted to heat before it can be used.
Various types of solar energy collectors (also called absorbers or absorber
plates) are used to convert the sun's radiation to heat. Solar-heated hot water
provides not only the building's hot-water requirements, but space-heating as
well. This solar system, based on water-heating, works like this. Each of its
collectors, placed on the roof, consists of a shallow fiberglass tray that holds
a number of copper tubes under a special glass cover. The tubes are, in turn,
fixed to a blackened metal surface which absorbs energy from the sun. The sun's
rays, passing through the glass, heat the water in the tubes.
Since the energy is available only during the day and only then when there
is not a great deal of cloud cover, the heat must be stored. This can be done in
wa¬ter, or in rock or pebble beds. The energy is stored in the hot water in the
pipes.
1. Solar energy was first used_______.
A. to start a fire B. to cook food
C. to power a heating-system D. in a war
2. What must be done to solar energy before it can be used?
A. It must be stored in rock beds. B. It must be distilled.
C. It must be converted to heat. D. It must be purified.
3. There is so much research into the use of solar energy because
'_______.
A. more irrigation projects are needed B. the construction industry is
expanding C. fossil fuels are running out D. it transmits electromagnetic
radiation
4. Solar energy must be stored because_______.
A. it is limited B. there is not much of it
C. it is not always available D. the passage does not tell us why
5. How many uses has solar energy been put to according to the passage?
A. 2. B. 3.C. 4. D. More than 4.
D C C C B |
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发表于 2017-8-26 12:13:35