IV.Read the passage and choose the best answers.-|||-To get some idea of the amount of heat the sun gives off,think about this.If you could-|||-collect all the heat that hits the earth in a two-week period,it would equal the amount of all the-|||-other known sources and reserves of energy:wood,coal and oil.But even these sources of energy-|||-depend on the sun for their formation. For example,a tree would certainly never grow and-|||-provide fuel in the form of wood were it not for the sun.-|||-Because the sun is so important in the production of all forms of heating fuel,more and-|||-more time and money are being spent studying ways to change power from the sun directly into a-|||-form of heat.-|||-The process in use for collecting energy from the sun-known as solar energy-is quite-|||-simple.The sunlight hits a metal plate known as a flat-plate collector,and the plate absorbs the-|||-heat from the sun.This heat,in turn,heats a liquid inside the plate.A layer of fiberglass inside-|||-the plate helps prevent this heat from escaping.In this way,solar heat can be stored in a liquid-|||-solution equaling about 1,000 watts of electricity per square metre.-|||-In the 1960s,a solar furnace was fixed in the Pyreness Mountains of France to test the use-|||-of solar energy.In this furnace,a mirror is used to concentrate the sun`s heat.-|||-This concentrated heat keeps temperature in the fumace as high as 6,000 F.-|||-() 1.How does the amount of heat the sun gives off in two weeks compare with all the other-|||-known sources and reserves of energy?-|||-A.More. B.Less.-|||-08 01 C.Equal. D.About the same.-|||-() 2.What have the scientists been studying?-|||-A.Ways to change sun power directly into electricity-|||-B.Ways to change sun power into a form of solid.-|||-C.Ways to change sun power into a form of heat.-|||-D.Ways to change sun power into a form of liquid.-|||-() 3.Why is a mirror used in the furnace?-|||-A.To concentrate the heat from the sun.-|||-B.To reflect the heat from the sun.-|||-C.To collect the heat from the sun.-|||-D.To prevent the sun`s heat from escaping.-|||-() 4.What is NOT mentioned about the sun power in this passage?-|||-A.The amount of heat the sun gives off is very great.-|||-B.The process currently in use for collecting energy from the sun is not complex.-|||-C.Solar heat can only be used,but not stored.-|||-D.Solar heat is vitally important for all forms of life.-|||-() 5.What is this passage mainly about?-|||-A.The usefulness of sun power.-|||-en ding oosIV.Read the passage and choose the best answers.-|||-To get some idea of the amount of heat the sun gives off,think about this.If you could-|||-collect all the heat that hits the earth in a two-week period,it would equal the amount of all the-|||-other known sources and reserves of energy:wood,coal and oil.But even these sources of energy-|||-depend on the sun for their formation. For example,a tree would certainly never grow and-|||-provide fuel in the form of wood were it not for the sun.-|||-Because the sun is so important in the production of all forms of heating fuel,more and-|||-more time and money are being spent studying ways to change power from the sun directly into a-|||-form of heat.-|||-The process in use for collecting energy from the sun-known as solar energy-is quite-|||-simple.The sunlight hits a metal plate known as a flat-plate collector,and the plate absorbs the-|||-heat from the sun.This heat,in turn,heats a liquid inside the plate.A layer of fiberglass inside-|||-the plate helps prevent this heat from escaping.In this way,solar heat can be stored in a liquid-|||-solution equaling about 1,000 watts of electricity per square metre.-|||-In the 1960s,a solar furnace was fixed in the Pyreness Mountains of France to test the use-|||-of solar energy.In this furnace,a mirror is used to concentrate the sun`s heat.-|||-This concentrated heat keeps temperature in the fumace as high as 6,000 F.-|||-() 1.How does the amount of heat the sun gives off in two weeks compare with all the other-|||-known sources and reserves of energy?-|||-A.More. B.Less.-|||-08 01 C.Equal. D.About the same.-|||-() 2.What have the scientists been studying?-|||-A.Ways to change sun power directly into electricity-|||-B.Ways to change sun power into a form of solid.-|||-C.Ways to change sun power into a form of heat.-|||-D.Ways to change sun power into a form of liquid.-|||-() 3.Why is a mirror used in the furnace?-|||-A.To concentrate the heat from the sun.-|||-B.To reflect the heat from the sun.-|||-C.To collect the heat from the sun.-|||-D.To prevent the sun`s heat from escaping.-|||-() 4.What is NOT mentioned about the sun power in this passage?-|||-A.The amount of heat the sun gives off is very great.-|||-B.The process currently in use for collecting energy from the sun is not complex.-|||-C.Solar heat can only be used,but not stored.-|||-D.Solar heat is vitally important for all forms of life.-|||-() 5.What is this passage mainly about?-|||-A.The usefulness of sun power.-|||-en ding oos