高考英语一轮复习易错题型专训（2）阅读理解-概括主旨大意类1.A machine that takes sweat-laden (浸满汗水的) clothes and turns the sweat into drinking water is in use in Sweden. The machine makes the clothes turn round quickly, heats them to remove the sweat, and then passes the steam through a kind of special material to make purified water.Since it has been brought into use, its creators say more than 1000 people have drunk others “sweat” in Gothenburg. They add the liquid is cleaner than local tap water.The device was built for the United Nations child-focused charity UNICEF to promote a campaign highlighting the fact that 780 million people in the world lack access to clean water.The machine was designed and built by the engineer Andreas Hammar, known locally for his appearances on TV tech show “Mekatronik”. He said the key part of the sweat machine was a new water purification part developed by a company named HVR.“It uses a technique called membrane distillation (膜蒸馏),” he told the BBC. “We use a special kind of material that only lets steam through but keeps bacteria, salts, clothing fibers and other things out. They have something similar to the International Space Station, but our machine is cheaper to build. The amount of water it produces depends on how sweaty the person is, but one persons T-shirt typically produces 10ml, about a mouthful.”The device has been put on show at the Gothia Cup-the worlds largest international youth football tournament. Mattias Ronge, chief executive of Stockholm-based advertising agency Deportivo, said the machine had helped raise awareness for UNICEF, but in reality had its limitations.“People havent produced as much sweat as we hoped right now the weather in Gothenburg is lousy,” Mattias Ronge said. “So weve equipped the machine with exercise bikes and volunteers are cycling like crazy. Even so, the demand for sweat is greater than the supply. And the machine will never be produced in large numbers, since there are better solutions out there such as water purifying pills.”1.Which of the following is the disadvantage of the sweat machine?A.The amount of water the machine produces is rather limited.B.It takes too long for the machine to produce water.C.It costs a large amount of money to build the machine.D.The water processed by the machine is not clean enough.2.UNICEF is mentioned in the text to _.A.show how the sweat machine worksB.show the importance of the United NationsC.explain why the sweat machine was inventedD.tell us who invented the sweat machine3.What did Mattias Ronge think of the sweat machine?A.It could only be used in summer.B.It was not worth popularizing.C.It did not work at all.D.The water it produced tasted sweet.4.The text is written mainly to tell us that _.A.780 million people in the world lack access to clean waterB.a machine which turns sweat into drinking water is inventedC.a better solution to purifying dirty water is discoveredD.the pill which turns dirty water into clean water is produced2.Languages have been coming and going for thousands of years, but in recent times there has been less coming and a lot more going. When the world was still populated by hunter-gatherers, small, tightly knit(联系) groups developed their own patterns of speech independent of each other. Some language experts believe that 10,000 years ago, when the world had just five to ten million people, they spoke perhaps 12,000 languages between them.Soon afterwards, many of those people started settling down to become farmers, and their languages too became more settled and fewer in number. In recent centuries, trade, industrialisation, the development of the nation-state and the spread of universal compulsory education, especially globalisation and better communications in the past few decades, all have caused many languages to disappear, and dominant languages such as English, Spanish and Chinese are increasingly taking over.At present, the world has about 6,800 languages. The distribution of these languages is hugely uneven. The general rule is that mild zones have relatively few languages, often spoken by many people, while hot, wet zones have lots, often spoken by small numbers. Europe has only around 200 languages; the Americas about1,000; Africa 2 400; and Asia and the Pacific perhaps 3,200, of which Papua New Guinea alone accounts for well over 800. The median number(中位数) of speakers is a mere 6,000, which means that half the worlds languages are spoken by fewer people than that.Already well over 400 of the total of, 6,800 languages are close to extinction(消亡), with only a few elderly speakers left. Pick, at random, Busuu in Cameroon (eight remaining speakers), Chiapaneco in Mexico (150), Lipan Apache in the United States (two or three) or Wadjigu in Australia (one, with a question-mark): none of these seems to have much chance of survival.1.What can we infer about languages in hunter-gatherer times?