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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.

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