最新职称英语阅读理解精选中英文语句的学习(六)_职称英语备考指南

最新职称英语阅读理解精选中英文语句的学习(六)

　　4. Scientists predict that the worlds known oil resources will run out early in the next century. But long before then the world will have to decide on its priorities. Can we afford to use so much of our limited petroleum supplies for private motoring? Should airlines compete on similar routes allowing planes to fly long distances with empty passenger seats? What alternative energy resources can be developed?

　　4、科学家预言世界上已探明的石油资源将在下个世纪初用尽。但远在那时候以前，世界就必须确定石油是优先考虑控制使用的物资。石油储量既然有限，我们还能把那么多的石油用于私人汽车吗?难道航空公司还应该为了在类似的航线上竞争而允许他们的客机有空座的长途飞行吗?能开发出什么样的替代能源呢?

　　5. There is an old English saying, Necessity is the mother of invention, which means that when you are faced with a need you will discover some way of fulfilling it. Already scientists are proposing some fascinating solutions. There is one suggestion that the wheeled traffic and the footsteps of crowds walking the streets in major cities could generate energy. One company has presented an idea in which metal strips inserted in pavements and roads operate fly wheels by means of a piston action using hydraulic fluid. They say the human and wheeled traffic in a busy city center could provide enough energy to light the streets of an entire town or power the heating system for a hospital or school. Some people are developing sophisticated versions of the windmill. Engines can run on alcohol, so surplus sugar cane could be used to produce energy. An air ship powered by energy from the sun has been suggested. Such sun ship would have a large enough surface area to carry the enormous number of solar cells necessary to move any appreciable load. Such sun ship might travel at over one hundred kilometers an hour. In such circumstances, of course, the tropical parts of the world would have a head start in the race to find new energy sources.