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    By using less energy, you can reduce pollution that causes global （全球的） warming, An energy-saving light bulb （灯泡） uses less energy to produce the same amount of light as a regular bulb, Use the chart to compare a regular bulb with an energy-saving bulb．

        Regular Light Bulb

    Energy-Saving Light Bulb

     Name

     Incandescent light bulb

    Compact fluorescent light bulb（CFL），energy saver

     Price

     50 cents

    $5

     Cost of energy

    Used in one year （4 hours a day）：$9.3

     Used in one year（4 hours a day）：$2.5

     Energy used

    75 watts（Most of this

    energy is wasted as heat．）

     20 watts

     Lifetime

     1.000 hours

     10,000 hours

    （   ） 1．How much more energy does the regular bulb use than the CFL bulb if they are used for a year （four hours every day）?

    A．75 watts.          B．55 watts.          C．20 watts.                D．50 watts.

    （   ） 2．How many regular bulbs does a CFL bulb equal （等同于） in lifetime?

    A．1               B．5.                C．10.               D．20.

    （   ） 3．I bought a regular bulb and Tom bought a CFL bulb．If we both used the bulb for four hours a day, how much money would Tom save in all after a year?

    A．$ 2.3.             B．$ 90.5.            C．$ 6.8.             D．$ 95.5.

    （   ） 4．Why do regular light bulbs use so much energy?

          A．They make more light than CFL bulbs.

          B．They can be used for a longer time than CFL bulbs.

    C．They waste most of their energy as heat.

    D．It's because of their shapes.

    （   ） 5．What does the writer try to tell us according to the passage?

    A．Using more energy can produce less pollution.

          B．Energy-saving light bulbs are cheaper than regular ones in shops.

          C．It is a good idea to use energy-saving CFL bulbs instead of regular ones.

    D．An energy-saving light bulb is easier to get broken.

    BCACC

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