四级听力天天练:第二十二期 4-2(4/7)

四级考试是许多童鞋必须通过的考试，其重要程度不言而喻。希望通过四级听力天天练，童鞋们可以提高听力水平，高分通过四级，冲刺六级。

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Hints:
Don
Shirley

Next important is to replace the traditional light bulbs in one's house with the new energy smart type. They last ten times longer as well as less power. Also people were told to keep their refrigerator door closed except for moment they are in use. They have already done the last two things so they gave themselves another point for their "greenness". One thing they listened with special interest concerned with the use of their electric dishwasher. They use it a lot, even though they heat the water for it with natural gas, the drying cycle uses a lot of electrical energy. The energy expert suggested that people turn off the dishwasher heat and permit the dishes to dry naturally rather with heat. Don and Shirley discussed this and realized they had never done it. So in the future, they think they'll try to remember this.