阅读理解-----D

Astronauts aboard the space station celebrated a space first on Wednesday by drinking water

that had been recycled from ;their. urine (尿)，sweat and water got from air. They said "cheers,"

clicked drinking bags and toasted NASA workers on the ground.

The urine recycling system is needed for astronaut stations on the moon and Mars. It also

will have NASA money because it won't have to ship up as much water to the station by space

shuttles or cargo rockets. Besides, it's. important as the space station is about to expand from three

people living on beard to six.

The recycling system had been brought up to the space station last November by space

shuttles Endeavour, but it couldn't be used until samples were tested back on earth: So when it

came time to actually drink up, NASA made a big deal of it. The -three-man crew stood holding

their drinks and congratulated engineers in two NASA centers that worked on the system.

"This is something that had been the stuff of science fiction,” American astronaut Michael

Barratt said before taking a small mouthful. "The taste is worth trying."

The new system takes the combined urine of the crew from the toilet, moves it to a big tank,

where the water is boiled off, and the vapor is collected. The rest of the urine is thrown away.

Then the water vapor is mixed with water from air, and then it goes through filters(过滤器).

When six crew members are aboard it can make about six gallons from urine in about six hours.

“Some people may find the idea of drinking recycled urine distasteful, but it is also done on

earth, but with a lot longer time between urine and the tap,” said Marybeth Edeen, the space

station's national lab manager.

The technology NASA developed for his system has already been used for quick water

purification after the 2004 Asian tsunami.

53.  According to the text, the recycling system is important because______.

A.it makes traveling to he moon for the average person possible

B.with it NASA won't need to ship any water up the space station

C.it can help meet the need for more water after the crew is expanded

D. it protects the environment in space by reducing the amount of waste

C考查细节理解。根据第二段中的it won't have to ship up as much water to the station by space

shuttles or cargo rockets. Besides, it's. important as the space station is about to expand from three

people living on beard to six.可知选C。

54. From paragraph 5，we can know________.

A. the theory behind the recycling system   B.the effect of the recycling system

C. an opinion on recycling urine             D. the process of recycling urine

D考查判断、推理。根据The new system takes the combined urine of the crew from the toilet, moves it to a big tank, where the water is boiled off, and the vapor is collected. The rest of the urine is thrown away.可知，这是循环利用的过程。

55. What did Edeen say about recycled urine and the recycling system?

A. The taste of recycled urine is not as good as that of common water.

B. The recycling system has made a science fiction story come true，

C. The idea of drinking recycled urine makes astronauts feel unpleasant.

D. It takes a longer time on earth to make water from urine than in space.

D考查判断、推理。根据it is also done on earth, but with a lot longer time between urine and the tap可知，在地球上，把尿净化成自来水需要更长的时间。

56. What is the best title for the passage?

A. The Research of NASA Has Made Great Progress

B. New Technology Is Used in the Space Station

C. Drink up Space Station Recycles Urine to Water

D. Good News：Water Recycled from Urine Tastes Good

C考查文章的标题。根据全文可知：在空间站将尿转换成水。