How much of the power consumed by incandescent bulbs is converted into light？

A．A small portio

B．Some 40 percen

C．Almost hal

D．75 to 80 percen

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1 Some countries have tried to jump-start the market of heat pumps by________.

A．upgrading the equipment

B．encouraging investments

C．implementing high-tech

D．providing subsidies

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2 German chemicals giant BASF saves 200 million a year by________.

A．recycling heat and energy

B．setting up factories in China

C．using the newest technology

D．reducing the CO2 emissions of its plants

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3 Global residential power consumption can be cut by 43 percent if________.

A．we increase the insulation of walls and water pipes

B．we choose simpler models of electrical appliances

C．we cut down on the use of refrigerators and other white goods

D．we choose the most efficient models of refigerators and other white goods

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