初二年级英语完形填空训练题8年级英语-Space washer太空洗衣机

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Space washer 太空洗衣机

Have you ever thought about how astronautswash their clothes without gravity (重力)? It's not (1).  (2) is it hard to wash clothes in space? Weknow normal washing machines need gravity to work, (3) there is no gravity inspace. Washing machines usually (4) a lot of water. This amount of water is too(5) for the spacecraft to carry. There's no washing machine on theInternational Space Station(ISS,国际空间站). (6), this may not be a problem in the future.

Russian scientists are making a (7) washingmachine for astronauts to use in space, AFP reported. The washing machine is (8)the ones we use. It doesn't need water. Instead, it (9) carbon dioxide(二氧化碳) fromthe air that the astronauts breathe out. Then, it uses high pressure(压力) to (10)that carbon dioxide into a liquid (液体). The liquid canhelp (11) clothes.

This could make astronauts lives much (12)because normal washing machines can't work in space, astronauts living aboardthe ISS need to (13) as many clothes as possible. Sometimes they even (14)other spacecraft to bring clean clothes for them from the Earth. According toNewsweek, three astronauts (15) on the ISS for a year need 657.7 kg ofclothing. Six people taking a two-year trip to Mars would need 2,722 kg of clothes.That's as heavy as two cars!

(  )1. A. possible   B. necessary     C. difficult          D. easy

(  )2. A. Why    B. When             C. How  D.Which

(  )3. A. and      B. so                 C. but    D.if

(  )4. A. save     B. need             C. waste        D. carry

(  )5. A. light B. special                 C. heavy          D. useful

(  )6. A. Luckily    B. Finally           C. Recently     D. Perfectly

(  )7. A. useful       B. special          C. helpful    D. meaningful

(  )8. A. different from   B. far from   C. away from    D.made from

(  )9. A. makes      B. sends            C. collects   D. cleans

(  )10. A. turn        B. put                C. get    D. move

(  )11. A. reduce   B. increase        C. clean         D. pollute

(  )12. A. happier  B. healthier       C. harder        D. easier

(  )13. A. wash      B. donate          C. bring       D. take

(  )14. A. allow      B. ask                C. offer    D. invite

(  )15. A. living      B. flying            C. walking   D. learning