综合题(本大题共3小题，每小题5分，共15分。)-湖北继续教育网网校

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[主观题]综合题(本大题共3小题，每小题5分，共15分。)

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1. 23.How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important questions that many people are asking today. Some people think that man might be able to solve both problems at the same time.They suggest using garbage as an energy source,and at the some time it can save the land to hold garbage. For a long time, people buried garbage or dumped (倾倒) it on empty land. Now, empty land is scarce.But more and more garbage is produced each year.However, garbage can be a good fuel to use.The things in garbage do not look like coal, petroleum, or natural gas;but they are chemically similar to these fossil(化石) fuels.As we use up our fossil fuel supplies, we might be able to use garbage as an energy source. Burning garbage is not a new idea.Some cities in Europe and theUnited States, have been burning garbage for years.The heat that is produced by burning garbage is used to boil water.The steam that is produced is used to make electricity or to heat nearby buildings. In Paris France, some power plants burn almost 2 million metric tons of the cities garbage each year.The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil. Our fossil fuel supplies are limited. Burning garbage might be one kind of energy source that we can use to help meet our energy needs.This method could also reduce the amount of garbage piling up on the earth.23.1 What two problems can man solve by burning garbage?A.The shortage of energy and air pollutionB.The shortage of energy and the land to hold garbageC.Air pollution and the shortage of fossil fuelD.Air pollution and the shortage of land to hold garbage
2. 如图是氢原子能级图的一部分．大量原子被激发到n=3的能级上．由于电子的跃迁，氢原子吸收的光谱有N条，光子的最大能量为E，由图可知（??）
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4. 2．货币在交换中起媒介作用时发挥的职能是（　　　）
5. 以偏概全、以点概面的片面知觉是

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