题目内容
If you knew a bottle of water had been recycled from urine (尿), would you drink it? Astronauts at the International Space Station (ISS) may soon do so. NASA (美国航空航天局) said it would use a high-tech machine (高科技机器) to recycle wastewater at the ISS. The machine will recycle everything from sweat (汗), the water for washing hands, shower water, water used for brushing teeth, and even urine, to make drinking water.
It will save NASA millions of dollars each year. At present, each ISS astronaut uses about 4.4 liters (升) of water every day. It costs about $24 million a year to transport water up to ISS. NASA says that a liter of water costs about $11,000.
The machine will be sent to the ISS in October 2008. NASA hopes it will recycle about 93% of all water used on the station. Will the water be clean? Scientists say the wastewater will go through a very complicated process (复杂的过程). For example, different chemicals will be put in the wastewater; the water will be heated to 130℃to get rid of bacteria (细菌). The recycled water is thousands of times better than the water from a city tap, scientists say.
1.NASA will use a high-tech machine to recycle wastewater at the ISS to __________.
A. protect the ISS
B. make astronauts at ISS work harder
C. provide better water and food for ISS astronauts
D. save the cost of transporting water up to the ISS
2.At present it costs NASA about ______ dollars to transport water up to an astronaut at the ISS a day.
A. 4.4 thousand B. 11 thousand
C. 48.4 thousand D. 24 million
3.Scientists plan to get rid of bacteria in the wastewater by ______.
A. freezing B. heating
C. shaking D. precipitating (沉淀)
4.The reading mainly tells us something about ______.
A. water recycling B. the International Space Station
C. a high-tech machine D. the cost of NASA
5. Which of the following sentences is true, according to the passage?
A. The recycled water is much better than that from a city tap.
B. The high-tech machine will recycle all the water used on the station.
C. At present, each ISS astronaut uses more water than the people living on the earth.
D. The high-tech machine can only recycle urine to make water at present
1.D
2.C
3.B
4.C
5.A
【解析】
试题分析：这篇短文主要介绍了美国航天局将使用一种高科技机器回收在国际空间站的一切废水，包括洗手的水,淋浴的水，汗水，甚至尿液。科学家说经过机器回收的水，要比城市的自来水好几千倍。
1.二段It will save NASA millions of dollars each year.描述可知那样可以节约运输费用，故选D。
2.计算归纳题。根据第二段At present, each ISS astronaut uses about 4.4 liters (升) of water every day. 和NASA says that a liter of water costs about $11,000.可知每个宇航员每天用水4.4升，每升水用$11,000，通过计算故选C
3.细节理解题。根据第三段the water will be heated to 130℃to get rid of bacteria (细菌)故选B
4.归纳理解题。根据短文的主要内容可知主要描述了高科技的机器回收水，故选C。
5.是非判断题。根据第三段The recycled water is thousands of times better than the water from a city tap可知经过机器回收的水，要比城市的自来水好几千倍，故选A。
考点：科普类短文阅读。
