Worldwide every day, we devour the energy equivalent of about 200 million barrels of oil. Most of the energy on earth comes from the sun. In fact enough energy from the sun hits the planet’s surface each minute to cover our needs for an entire year, we just need to find an efficient way to use it. So far the energy in oil has been cheaper and easier to get at. But as supplies dwindle, this will change, and we will need to cure our addiction to oil.
Burning wood satisfied most energy needs until the steam-driven industrial revolution, when energy-dense coal became the fuel of choice. Coal is still used, mostly in power stations, to cover one quarter of our energy needs, but its use has been declining since we started pumping up oil. Coal is the least efficient, unhealthiest and most environmentally damaging fossil fuel, but could make a comeback, as supplies are still plentiful; its reserves are five times larger than oil’s.
Today petroleum, a mineral o
A. The United States.
B. Russia.
C. Norway.
D. Venezuela.
Worldwide every day, we devour the energy equivalent of about 200 million barrels of oil. Most of the energy on earth comes from the sun. In fact enough energy from the sun hits the planet’s surface each minute to cover our needs for an entire year, we just need to find an efficient way to use it. So far the energy in oil has been cheaper and easier to get at. But as supplies dwindle, this will change, and we will need to cure our addiction to oil.
Burning wood satisfied most energy needs until the steam-driven industrial revolution, when energy-dense coal became the fuel of choice. Coal is still used, mostly in power stations, to cover one quarter of our energy needs, but its use has been declining since we started pumping up oil. Coal is the least efficient, unhealthiest and most environmentally damaging fossil fuel, but could make a comeback, as supplies are still plentiful; its reserves are five times larger than oil’s.
Today petroleum, a mineral o
A. Most of the energy on Earth comes from the Sun.
B. Oil supply is increasing all the time.
C. Demand for oil is increasing all tile time.
D. Oil supply is decreasing.
Almost every day we see something in the papers about the latest exciting developments in the space race. Photographs are regularly flashed to the earth from thousands and even millions of miles away. They are printed in our newspapers and shown on our television screens as a visible proof of the man’s newest achievements. The photographs neatly sum up the results of these massive efforts to ’ conquer space’ and at the same time they exposed the absurdity of the undertaking. All we can see is an indistinguishable blob that is supposed to represent a planet seen from several thousand miles away. We are going to end up with a little moon-dust and a few stones which will be put behind glass in some museum. (41)__________
(42)__________It is just an extension of the race for power on earth. Only the wealthiest nations can compete and they do so in the name of pure scientific research. But in reality, all they are interested in is power and prestige. They wan
A. An increasing number of people even begin to picture a space travel in recent years.
B. Poverty, hunger, disease and war are man’s greatest enemies and the world would be an infinitely better place if the powerful nations devoted half as much money and effort to these problems as they do to the space race.
C. The space race is not simply the objective search for knowledge though it is often made out to be.
D. On the other hand, people benefit dramatically from the development of science and technology.
E. This is hardly value for money when you think that our own earth can provide countless sights that are infinitely more exciting and spectacular.
F. We are often told that technological know-how, acquired in attempting to get us into orbit, will be utilized to make better on earth.
G. If a man deprived himself and his family of food in order to buy and run a car, we would consider him mad.
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