... money -& gt; We can use energy -saving bulbs instead of ordinary 100 watt-light bulbs to spend less on lighting -& gt; She will pay US$ 2 for lighting if she uses energy -saving bulbs instead. -& gt; ... will she pay if she uses two energy -saving bulbs instead?4. What is the purpose of the labeling scheme? 5. Why should we save energy? *Questions Unit 7: Saving energy •In Western countries, ... conserve the Earth’s resources 5. READ100-watt light bulb Energy -saving light bulbsElectricity billFreezer Refrigerator Washing machine Unit 7: Saving energy 5. READLuxury > < NecessityConsumer...