"Have you ever been out on a boat and felt it lifted up by a wave? Or have you jumped in the water and felt the rush of energy as waves came over you?" asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh. "There is certainly a lot of energy in waves," he said.

    Scientists are working to use that energy to make electricity.  Most waves are created when winds blow across the ocean. "The wind starts out by making little ripples (涟漪), but if they keep on blowing, those ripples get bigger and bigger and turn into waves," Taylor said. "Waves are one of nature's ways of picking up energy and then sending it off on a journey."

    When waves come toward the shore, people can set up darns to block the water and send it through a large wheel called a turbine (涡轮机). The turbine can then power an electrical generator to produce electricity.

    "The resource is huge," said Janet Swain of the World-watch Institute. "We will never run out of wave power." Besides, wave energy does not create the same pollution as other energy sources, such as oil or coal. Oceans cover three-quarters of the Earth's surface - that would make wave power seem ideal for creating energy throughout the world, though there are some weak points yet to overcome.

    Swain said that wave power still costs too much money. She also said that its effects on sea animals are still unknown. What is more, wave power could affect fishing and boat traffic.

    Traditional sources of energy like oil and gas may someday run out. "Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is rising rapidly throughout the world," Swain said. In the future when you turn on a light, an ocean wave could be providing the electricity!

1. The writer uses the two questions at the beginning of the passage to ______.

   A. test the readers' knowledge about waves     B. draw the readers' attention to the topic

   C. show Jamie Taylor's importance           D. invite the readers to answer them

2. The underlined phrase "picking up" (Paragraph 2) is closest in meaning to ______.

   A. starting again    B. speeding up          C. gathering        D. improving

3. We can make better use of wave energy if we ______.

   A. shorten its journey to thousands of homes

   B. build more small power stations on the oceans

   C. reduce the cost of turning it into electric power

   D. quicken the steps of producing electricity

4. It can be inferred（推论） that some day we might not worry about ______.

   A. air pollution     B. our boat traffic    C. our power supply   D. our supply of sea fish

 

The United States is the world's largest consumer of energy. We use electricity, gas and oil to light and heat our buildings and run our cars. The demand for power is growing. But we may not need to build new power plants or find more oil. The best way to increase our supply of energy is to be more efficient.
Did you know that when you leave your video-game console (游戏机操纵台) on, it consumes more electricity than two refrigerators? Or that those funny-looking, twisty bulbs (灯泡) use 75％ less power than traditional light bulbs? We have the tools to save money, reduce pollution and even help our planet, simply by wasting less energy.
As President, Barack Obama plans to make energy efficiency in American a major goal. He has promised to cut 15% of all energy used by the Federal Government. In a speech, he called for 75% of government office buildings to be updated for better efficiency. He pointed out that energy-efficient buildings and homes will save consumers billions of dollars on energy bills. An “extra benefit”, he added, will be “a cleaner, safer planet.”
Gas, coal and oil are called fossil fuels. Fossil fuels have been the world's main source of energy for hundreds of years. But burning them releases dirty gases, which cause pollution.
There are two main ways to save energy. The first is to use more efficient machines. Hybrid cars use less gas. New appliances are designed to use less electricity. Today's refrigerators are three times more efficient than those before 1973. Laptop computers consume much less energy than desktop computers.
The second is to use machines more productively. According to the US Department of Energy, in the average home, 75％ of the electricity used to power electronic equipment is standby power (备用电源) . That means power flowing to plugged-in appliances whether or not they are being used.
Homeowners can avoid wasting power by pulling the plug on appliances when they are not in use. Efficiency experts argue that today's best techniques could cut US oil and gas use in half, and reduce our electricity use by three-fourths.
【小题1】By referring to Obama's plan, the author mainly intended to say that _______

A．the US government office buildings have wasted the most energy

B．Obama has decided to take the lead to cut down the use of electricity

C．it is time for the US to shoulder the responsibility for a cleaner planet

D．the US is determined to improve energy efficiency in the whole America

【小题2】It can be inferred from the text that ________.

A．to build new power plants or find more oil is no longer useful

B．burning fossil fuels can lead to a growing demand for power

C．everyone can make a difference by wasting less energy

D．most of the electricity is wasted with appliances plugged-in

【小题3】What would be the best title for the text?

A．The world's largest consumer of energy

B．The world's energy efficiency movement

C．We need to find new energy

D．We have to be more energy efficient

      "Have you ever been out on a boat and felt it lifted up by a wave? Or have you jumped in the water and felt the rush of energy as waves came over you?" asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh. "There is certainly a lot of energy in waves," he said.

       Scientists are working to use that energy to make electricity. Most waves are created when winds blow across the ocean. "The wind starts out by making little ripples (涟漪) , but if they keep on blowing, those ripples get bigger and bigger and turn into waves," Taylor said. " Waves are one of nature 's ways of picking up energy and then sending it off on a journey.

     When waves come toward the shore, people can set up dams to block the water and send it through a large wheel called a turbine (涡轮机) . The turbine can then power an electrical generator to produce electricity.

     "The resource is huge," said Janet Swain of the Worldwatch Institute. "We will never run out of wave power. " Besides, wave energy does not create the same pollution as other energy sources, such as oil or coal. Oceans cover three-quarters of the Earth's surface - that would make wave power seem ideal for creating energy throughout the world, though there are some weak points yet to overcome.

      Swain said that wave power still costs too much money. She also said that its effects on sea animals are still unknown. What is more, wave power could affect fishing and boat traffic.

      Traditional sources of energy like oil and gas may someday run out. " Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is rising rapidly throughout the world," Swain said. In the future when you turn on a light, an ocean wave could be providing the electricity!

64. The writer uses the two questions at the beginning of the passage to _______.

A. test the readers' knowledge about waves          B. draw the readers' attention to the topic

C. show Jamie Taylor's importance                            D. invite the readers to answer them

65. The underlined phrase "picking up" (paragraph 2) is closest in meaning to _______.

A. starting again            B. speeding up              C. gathering           D. improving

66. We can make better use of wave energy if we _______.

A. shorten its journey to thousands of homes       B. build more small power stations on the oceans

C. reduce the cost of turning it into electric power

D. quicken the steps of producing electricity

67. It can be inferred that some day we might not worry about ________.

A. air pollution             B. our boat traffic         C. our power supply             D. our supply of sea fish

I'm afraid our supply of vegetables will soon ______.

A．give up　B．give outC．go out D．run out of

Our supply of food is ________ now . We’d better store some .

A．running out

B．running out of

C．run out

D．using up