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 ISSThe 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 waterIt will save NASA millions of dollars each yearAt present, each ISS astronaut uses about 4.4 liters (升)of water every dayIt costs about $24 million a year to transport water up to ISSNASA says that a liter of water costs about $11,000.

The machine will be sent to the ISS in October 2008NASA 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.

1NASA will use a high - tech machine to recycle wastewater at the ISS to________.

Aprotect the ISS

Bmake astronauts at ISS work harder

Cprovide better water and food for ISS astronauts

Dsave the cost of transporting water up to the ISS

2At present it costs NASA about_________dollars to transport water up to an astronaut at the ISS a day.

A4.4 thousand    B11 thousand    C48.4 thousand  D24 million

3Scientists plan to get rid of bacteria in the wastewater by_____________.

Afreezing           Bheating          Cshaking         Dprecipitating (沉淀)

4The reading mainly tells us something about _______.

Awater recycling                           Bthe International Space Station

Ca high - tech machine                 Dthe cost of NASA

5Which of the following sentences is true, according to the passage?

 AThe recycled water is much better than that from a city tap.

 BThe high - tech machine will recycle all the water used on the station.

   CAt present, each ISS astronaut uses more water than the people living on the earth.

   DThe high - tech machine can only recycle urine to make water at present.

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