题目内容
（请给出正确答案）
How many solar heat panels do three or four bedroom homes usually need？
A．Three or four.
B．Five or six.
C．Seven or eight.
D．Twelve or more.
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更多“How many solar heat panels do …”相关的问题
M: Thank you. As you can see, little by little, Americans are turning to solar power, tapping the strength of the sun for energy.
W: Yeah, that's true. Sunlight has already been used for heating or cooling homes and office buildings in the sunny south.
M: Experts say all signs point to the birth of the solar energy industry. Right now, an increasing number of companies are selling solar collector panels to heat and cool homes or to heat water. The glass and metal panels each cost from ＄100 to more than ＄500, and the three or four-bedroom home usually requires a dozen or more. They look like sandwiches. They are usually placed in rooftops. Nobody knows how many have been sold, and in addition, many people have built their own units. It has been estimated that solar power equipment will be a $1.3 billion industry by 1995, and more than a million homes will use sunlight for heat, air conditioning or to generate electricity, both in the cities and in countryside.
W: Wow! That is really big business.
What do we learn about the use of solar energy in the U. S. ？
A．It is very well established.
B．It is relatively new.
C．It is found in one million homes.
D．It is being rapidly expanded.
For example, people have for many years been using the【C5】______heat of the sun to cook by solar【C6】______which have been built with several incurred【C7】______reflecting the sun and focusing the heat on the cooking element. This【C8】______can be used like a gas or electric stove; it is more expensive to make but it doesn't need any【C9】______and so costs【C10】______to use. Another【C11】______of using solar energy is in house heating.
The【C12】______of energy we use most is electricity, and every day more is【C13】______. But electricity has to be made too, and to make it huge quantities of fuel is required -- oil, coal, gas and nowadays even uranium.
The question which【C14】______everyone today is: how long will these fuels【C15】______？ Nobody knows it for sure,【C16】______most experts think it will soon be difficult to obtain sufficient electricity from these sources. It is possible that the sun can make a(n)【C17】______here, too.
Solar power has already been used to produce【C18】______heat. In Southern France a solar furnace has been built,【C19】______temperatures reach more than 3 000 centigrade. This furnace is not only used for experiment【C20】______, but could be used to produce steam for a power station.
【C1】
A．power
B．time
C．heat
D．temperature
The atmosphere is not just a protector but also a great transporter. The transport of water vapor in the atmosphere is an important mechanism by which heat energy is redistributed poleward. Heat energy absorbed at the equator is deposited at the poles and the temperature gradient between these regions is reduced. The circulation of the atmosphere and the weather it generates is but one example of the many complex, interdependent events of nature. The web of life depends on the proper functioning of these natural mechanisms for its continued existence.
Some argue that climate change is too complicated to be attributed only to human activity. For example, fossil studies of radiolaria, a group of one-celled animals characterized by silicon-containing shells, have given scientists a fairly accurate account of climatic conditions in the distant past. Geologists found these 450, 000-year-old microorganisms preserved in cores of sediment taken beneath the floor of the Indian Ocean. They provide a record of cycles of climatic changes, determined by the alternating layers of species of warm and cold-preferring radiolaria. We now have confirmation that changes in the earth's orbital geometry caused the ice ages.
This does not let us off the hook because although we can hardly alter the basic forces at work that alter climate, even small contributions by humans can have dramatic effects. Given nature's interconnectedness, it is possible that the most serious threats have yet to be recognized.
The first paragraph of the text deals mainly with the earth atmosphere's ______.
A．sheltering effect
B．reviving effect
C．invigorating effect
D．cleansing effect
【C1】
A．materials
B．metals
C．reserves
D．fuels
Which is not true about solar heat collector panels？
A．They look like sandwiches.
B．They can heat but not cool homes.
C．They cost about ＄ 300 each.
D．They are placed on rooftops.
A.Beginning of Summer
B.Summer Solstice
C.Great Heat
D.Grain in Ear
1).The word lunatic originally meant___.
A、twelve lunar months
B、the home of the moon goddess
C、a person on whom the moon had a bad effect
D、a guard against the moon
2).Implied but not stated______.
A、A solar year lasts about 354 days
B、Sol was the Roman sun god
C、Our calendar is based on the movements of the moon
D、Mental illness really has nothing to do with the moon
3).In comparison with the solar year, the lunar year is__.
A、twice as long
B、the same length
C、shorter
D、a few days longer
4).A parasol is used to __.
A、measure solar time
B、protect us from the sun rays
C、protect us from the gods
D、view the sun during the day
5).The best title for this selection is:___.
A、The Gods of Rome
B、The Rhythm of the Universe
C、Ancient Beliefs
D、Gods in Our Words
A．The heat supply.
B．The electric supply.
C．The water supply.
D．The unemployment situation.
We learn from the passage that
A．all living things on the earth depend on the sun for their food
B．a forest looks dark in winter because it absorbs solar energy
C．only 0.023 of the energy from the sun is made use of on the earth
D．greenhouse gases allow heat energy to escape from the earth's surface
Solar ovens consist of a system of reflectors and a cooking pot. The rest is up to your imagination! Once you have collected or bought your solar oven, you can use it to prepare hot meals in the backyard, at a campground or wherever your heart desires.
Of all the inventions that could benefit humankind, a reliable solar cooker remains one of the most necessary. Countless people across the developing world still cook their food by burning wood or even cow dung, causing breathing problems and severe pollution in some regions.
The searching for a practical solar cooker has gone on for decades and produced dozens of models. But none of them have caught on importantly for use in the developing world because they can’t store heat. Without the ability to store heat, a cooker cannot be used, for example, on cloudy days.
But now a group based at the Norwegian University of Science and Technology (NTNU) is reporting a discovery in solar cookers. They say it will lead to the production of practical solar cookers within a year and a half and it can store enough heat during a sunny day to work for an entire additional day, even if it is cloudy.
1.People who do not have wood must spend small amounts of money on cooking fuel.()
2.There is a much easier way to cook food using energy from the sun.()
3.Solar cookers, or ovens, have not been used for centuries.()
4.Solar ovens consist of a system of reflectors and a cooking pot.()
5.Without the ability to store heat, a cooker can be used, for example, on cloudy days.()
