3. If you add enough insulation to your house, you may be able to _____________.
A) improve your work environment B) cut your utility bills by half
C) get rid of air-conditioners D) enjoy much better health
4. How much of the power consumed by incandescent bulbs is converted into light?
A) A small portion. B) Some 40 percent. C) Almost half. D) 75 to 80 percent.
5. 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
6. 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
7. 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 refrigerators and other white goods
8. Energy service contractors profit by taking a part of clients____________.
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