题目

阅读理解 Israeli company Watergen has produced a device that generates clean, drinkable water out of air. The device called GENNY is small enough to be used in a home or office but can generate up to 30 liters of water a day. The water that GENNY produces is not only clean enough to drink, it's also often cleaner than tap water. GENNY takes air in and passes it through a filter (过滤器) to remove dust and dirt. The filter is powerful enough to work even in areas with high air pollution. The air then passes through a chamber where heating and cooling cause water vapor in the air to condense (凝结). This water is then passed through several more filters and minerals are added to make it healthier and taste better. Finally, the water is stored in a tank where it is continually circulated to keep it fresh. A larger model, called the GEN-350, can produce up to 900 liters of water per day. The GEN-350 is now being used in hospitals that previously did not have a reliable source of fresh, clean water. Watergen has also developed an emergency response vehicle (ERV) that can carry a GEN-350 unit wherever it is needed. In addition to the GEN-350, the ERV carries a portable generator that supplies electricity for the GEN-350. Watergen's ERV is designed to bring water to people suffering from the effects of a serious earthquake, fire, flood or other situations. Once such an incident occurred in California in 2018. A fire started at a camp site and spread quickly over a wide area, destroying many thousands of acres of trees and many homes. One of Watergen's ERVs was driven there and it provided water for its citizens and rescue workers. Besides, they also provided clean safe water for the residents of Texas and Florida in the aftermath of the devastation caused by hurricane's Harvey and Irma. （1） What can we know about Watergen's devices? A . They're available in different sizes. B . They're made in numerous countries. C . They're extremely difficult to operate. D . They produce less water in polluted regions. （2） The GENNY adds minerals to       .              A . keep the water fresh and clean B . meet the water safety criteria C . remove dust and dirt from the water D . improve the flavor of the water （3） What can Watergen do using its ERV? A . Deal with customers' complaints. B . Outperform its competitors. C . Supply electricity for local people. D . Respond to natural disasters. （4） What is the purpose of the text? A . To advertise an Israeli company. B . To introduce an Israeli water device. C . To explain the principles of purifying water.  D . To recommend a new brand of drinking water. 答案： A D D B

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