IN WESTERN COUNTRIES, ELECTRICITY, GAS, AND WATER (36)_____ NOT...

câu 40.In Western countries, electricity, gas, and water (36)_____ not luxuries but necessities.Companies now realize that consumers want products that will not only work effectively, (37)_____ alsosave money.For most North American households, lighting accounts (38)_____ 10 percent to 15 percent of theelectricity bill. (39)_____, this amount can be reduced by replacing an ordinary 100-watt light bulb withan energy-saving bulb. These bulbs use a quarter of the electricity of standard bulbs and last eight timeslonger. Therefore consumers can save about US$7 to US$21 per bulb.In Europe, there is a labeling scheme for refrigerators, freezers, washing machines and tumbledryers. The label tells the consumers (40)_____ energy efficiency each model has, compared with otherappliances in the same category.