GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - ZK8LW6V257NSX74OK

Between 1970 and 1980, energy consumption by United States industry peaked and then declined, so that by 1980 total industrial use of energy was below the 1970 level even though total industrial output had grown substantially in the same period. Industry must have instituted highly effective energy conservation measures in those years to have achieved such impressive results.