Will it be enough? With global demand and emissions rising so fast, we may not have any choice but to try. Efficient technology is here now, proven and cheap. Compared with all other options, it’s the biggest, easiest and most profitable bang for the buck.

　　1. What is said to be best way to conserve energy nowadays?

　　A) Raising efficiency.

　　B) Cutting unnecessary costs..

　　C) Finding alternative resources.

　　D) Sacrificing some personal comforts.

　　2. What does the European Union plan to do?

　　A) Diversify energy supply.

　　B) Cut energy consumption.

　　C) Reduce carbon emissions.

　　D) Raise production Raise production efficiency.

　　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____________.

　　9. Many environmentalists maintain the view that conservation has much to do with _____.

　　10. The strongest incentives for energy conservation will derive from __________.

　　Unit 4

　　1. A 2.B 3.C 4.B 5.D 6.A 7.D

　　8. annual utility-bill savings

　　9. self-denial

　　10. the market itself/ the market