(79) [Burning garbage is not a new idea. Some cities in Europe and the United 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.

(80) [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 if garbage piling up on the earth .

[文章大意及重要词汇]

我们怎么才能摆脱垃圾呢？我们有足够的能源去满足未来的能源需求吗？

这是现代许多都在问的两个重要问题。有些人以外两个问题可以同时解决，他们建议把垃圾作为一种能源同时也可以解决由于垃圾占大量的土地而造成的土地紧张。

长期以来，人们都是埋掉（bury）垃圾或者倾倒到空地上。现在空地越来越少（scare）了，而每年制造的垃圾却越来越多了。但是垃圾也是一种很好的燃料（fuel）。虽然垃圾的构成跟煤、石油（petroleum）或者天然气不一样，但是从化学成分来讲，他和化石燃料是相似的。因此，当我们的化石燃料被用完时，我们或许可以把垃圾当作一种能量来源（source）。

燃烧垃圾并非是新想法，欧洲和美国的许多的城市多年来一直都在这样做。燃烧垃圾产生的热量用来加热水，产生的蒸汽（steam）可以用来发电供暖。法国巴黎的一些发电厂每年燃烧大约200百万吨的垃圾，所产生的能量大约和燃烧50万桶（barrels）石油所产生的能量是一样的。

我们的化石燃料供给是有限的(limited)。燃烧垃圾作为一种能量或许可以缓解我们对能源的需求。这种办法也可以减少堆积（piling up）在地球上的垃圾。

11. What two problems can man solve by burning garbage?
A. The shortage of energy and air pollution.      
B. The shortage of energy and the land to hold garbage.
C. Air pollution and the shortage of fossil fuel.
D. Air pollution and the shortage of land to hold garbage.
答案：B细节题，根据文章的最后一句话：焚烧垃圾可以解决两个问题，能源短缺，节省土地。

12. Which of the following is NOT the result of burning garbage?
A. The garbage burned is turned into fossil fuels.     
B. The heat produced is used to boil water.
C. The steam produced is used to make electricity     
D. The steam produced is used to heat buildings.
答案：A细节题，文章第四段谈到焚烧垃圾产生的热可以使水沸腾，产生的蒸汽可以发电，也可以给大楼供热，但是没有谈到焚烧的垃圾会变成化石。

13. According to the passage, which of the following is NOT true?
A. About 2 million metric tons of garbage is burned in France each year.
B. In a modern society, more and more garbage is produced each year.
C. Using garbage is a good way to solve the problem of energy shortage.
D. It will be too expensive to use garbage as an energy source.
答案：D细节题，把垃圾作为一种能源非常贵不符合文章的内容。

14. What is the author’s attitude?
A. Delighted       B. Sad