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As the saying goes, man struggles upwards; water flows downwards. Water runs downhill from mountaintops to streams to rivers to oceans. But downhill isn’t the only way that water moves .A new study measures how water travels from country to country for human consumption. This flow isn’t the type we usually think about .These scientists looked at the water used to grow and make the products which get shipped from nation to nation as imports or exports. They call this a flow of “virtual water(虚拟水)”.
We typically think about water as the liquid that flows from a tap. However,92%of the water used by people goes into growing crops,according to water researcher Arjen Hoekstra. He recently studied the hidden travels of virtual water used in products made from things like crops and meats .These products are shipped around the world.
For example, consider a sugary soft drink. Hoekstra estimated that to produce one half-liter of the drink requires between 170 and 310liters of the water—about 95%—is used to grow and process the ingredients(原料).Another 4%goes into the packaging and labeling. In Hoekstra’s calculation, when one country produces a half-liter of soda and sells it abroad,it exports as much virtual water as would fill a large refrigerator.
According to Hoekstra’s new report,dry countries like Israel and Kuwait,both in the Middle East,get the majority of their virtual water from other countries,through imported products. More surprisingly, some wetter countries,like the Netherlands and the United Kingdom, also get the majority of their virtual water from other places. That means that most of the water used to grow or produce the products and food consumed in those countries came from other countries.
In the United States most of the virtual water used comes from American sources .In China even less of the water associated with its products.
【小题1】The example of a sugary soft drink in Paragraph 3 is given to show_________.
A.how drinks are shipped
B.how virtual water is exported
C.how virtual water is used
D.how drinks are made
【小题2】In which countries does most part of virtual water come from outside?________
A.Kuwait and the Netherlands
B.China and the United Kingdom
C.America and the Netherlands
D.Israel and America
【小题3】What is the best title for the passage?
A.Crops and Virtual Water
B.Water’s worldwide travels
C.Benefits of Virtual Water
D.Import and Export of Water
【小题4】The passage is most probably a________.
A.science news reportB.science fiction story
C.newspaper advertisementD.book review
答案:【小题1】C
【小题2】A
【小题3】B
【小题4】A
试题分析:本文主要讲的是一个关于水如何从一个国家流向另一个国家的调查研究。
【小题1】C;大意分析题;第三段主要讲95%的水用来制作原料,5%用来包装及其他,可知这主要是为了说明水的用法,故选C。
【小题2】A;细节分析题;倒数第一段第一句dry countries like Israel and Kuwait,both in the Middle East,get the majority of their virtual water from other countries,through imported products. More surprisingly, some wetter countries,like the Netherlands and the United Kingdom, also get the majority of their virtual water from other places. 那些干涸的国家像Israel 和Kuwait 都是通过进口产品来从其他国家进口大多数水。更令人惊讶的是,一些比较潮湿的国家像新西兰和英国也是从其他国家进口大多数水。Israel and Kuwait,Netherlands and the United Kingdom这些都是从国外进口水的国家,所以此题选择A。
【小题3】B;主旨分析题;本文主要是一个关于水如何在全球流通的调查研究,故此题选B。
【小题4】A;推测分析题;本文主要描述的是一个调查研究,因此应是在一篇科学报导上的,故此题选A。
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