At present it costs NASA about _________ dollars to transport water up to an astronaut at the ISS a day.

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• 1NASA 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

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• 2The reading mainly talks about ___________.

  A.the invention of tea

  B.the way of drinking tea

  C.the history of tea bags

  D.people’s favorite tea in the world

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• 3The underlined sentence “Tea bags were soon a hit in the UK” probably means “________ in the UK”.

  A.Tea bags soon became popular

  B.Tea bags surprised everyone very much

  C.Tea bags kicked (踢) the loose-leaf tea out of the market

  D.Tea bags weren’t allowed to be sold

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• 4The material of the tea bags is usually __________ now.

  A.silk

  B.gauze

  C.paper

  D.plastic

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• 5The tea in silk bags was welcome because ________.

  A.the tea in bags was free and very good

  B.the tea tasted good and the cup was easy to wash

  C.people were happy with the loose tea

  D.people didn’t know any better way to enjoy the tea

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• 6Scientists plan to get rid of bacteria in the wastewater by ___________.

  A.freezing

  B.heating

  C.shaking

  D.precipitating (沉淀)

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• 7The reading mainly tells us something about ___________.

  A.water recycling

  B.the International Space Station

  C.a high-tech machine

  D.the cost of NASA

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• 8Which 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.

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