it is hopeful to bring solar energy into average households
it is feasible to use nuclear energy to run home appliances
it is economical to use water to heat houses
it is possible to use wind to power machines
第1题：
Passage Two
Questions 26 to 30 are based on the following passage.
We all know that humans are damaging the environment, but what can we do about it? Some people are trying to do their bit to be more environmentally friendly.
Local councils in Britain encourage certain aspects of green living, such as recycling paper, tin, plastic and glass. They want to reduce the amount of rubbish going into landfill sites（填埋场），because they are running out of places to dump（倾倒）rubbish. In some areas rubbish for recycling is collected from your doorstep, but in other areas, you have to take it to a special recycling place, such as a bottle bank.
Another way of reducing the amount of rubbish you create is to use reusable products instead of disposable ones For example, some people use strong shopping bags or boxes for their groceries instead of plastic carrier bags, or use washable nappies instead of disposables.
More people are becoming interested in reducing their carbon footprint—the amount of carbon they use up. They try to reduce their carbon emissions（释放）by cycling, using public transport or an electric car, rather than driving gas-consuming vehicles. Some people choose not to fly for holiday trips because planes are the biggest producers of carbon emissions.
You can make‘green’ choices when buying food too. It's best to buy food which was locally grown or produced so that it hasn't been imported by air, or shipped by road from far away.
Houses can be environmentally friendly too. It takes less energy to heat a house if it has good insulation（绝缘，隔热）and double glazing (双层玻璃）．You can also create your own energy it you have solar panels or a wind turbine fitted though these can be expensive. You can also save water by using a rain water container for washing the car or watering the garden. It's even possible to use a system where‘grey water’—water which has been through a tap（水龙头）once already, is used to flush（冲洗）toilets. Some new housing projects are being built specifically to be as environmentally friendly as possible.
26．The purpose of collecting reusable wastes is to＿．
A．save energy consumed in daily life
B．reduce the amount of rubbish dumped
C．create a new way of green living
D．decrease the amount of carbon produced
第2题：
A、source
B、material
C、power
D、energy
第3题：
Electromagnetic Energy
White light seems to be a combination of all colors. The energy that comes from a source of light is not limited to the kind of energy you can see. Heat is given off by a flame or an electric light. On a cloudy day it is possible to get a sunburn even though you feel cool. Visible light and the kind of energy that produce warmth and sunburn are examples of electromagnetic energy.
The sun is 93 million miles from the earth. Yet we can use energy from the sun because electromagnetic energy travels through space.
Many other kinds of energy are also types of electromagnetic energy. Radio, television, and radar signals travel from transmitters to receivers as low-energy electromagnetic waves. Infrared (红外线的) radiation is an electromagnetic wave. When it is absorbed by matter, heat is produced. Waves of infrared and visible light have more energy than waves of radio, television, or radar. Ultraviolet rays (紫外线) and X-rays are electromagnetic waves with even greater amounts of energy. Infrared radiation is used in cooking food and heating buildings. Sunlight and electric lights are part of our requirements for normal living. Ultraviolet radiation is useful in killing certain disease organisms. X-rays and gamma rays have so mush energy that they travel right through solid objects. They can be used to detect and treat cancer. X-rays are used in industry to find hidden cracks in metal, and in medicine to reveal broken bones.
Usually we use electricity to generate electromagnetic energy. The source of most of our energy is the sun. Heat from the sun causes water to evaporate. When the water falls to the earth as rain, some of it is trapped behind dams and then used to operate electric generators. Other generators are powered by coal, but the energy stored in coal came from the sun, too.
Until recently, the source of the tremendous amount of energy given off by the sun was a puzzle. If the sun depended on chemical reactions, it would have used up all its energy long ago. Experiments with electromagnetic radiation led to the theory that mass can be converted into energy. About forty years after the theory was proposed, nuclear energy was harnessed (利用) by man. Chemical energy comes from electron (电子) rearrangement. Nuclear energy comes from a change in the nucleus of an atom. Compared with chemical reactions, nuclear reactions release millions of times more energy per pound of fuel. We now believe that the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium(氦).
Nuclear energy is beginning to compete with coal as an economical source of power to generate electricity. It is also being used to operate engines in large ships. Scientists continue to seek new and better methods of obtaining and using energy.
A. Nuclear Reactions as the Lasting Source of the Sun's Energy
B. The Most Important Source of Energy
C. Types of Electromagnetic Energy
D. X-rays Are Used to Detect and Treat Cancer.
E. Seeking New Sources of Energy
F. Nuclear Energy is Beginning to Compete with Coal
Paragraph 3 ______
第4题：
第5题：
第6题：
For what purpose are the diving pipes used?
A. To absorb heat from the sun.
B. To store heat for future use.
C. To turn solar energy into heat energy.
D. To carry heat down below the surface.
第7题：
第8题：
We can use energy from the sun because ______.
第9题：
第10题：