2022年专八改错42道练习题 (10)

2021-12-20 07:17:00来源:网络

  新东方在线专四专八频道给大家整理的相关内容,希望能够对大家的专四专八考试备考有所帮助,更多有关专四专八的备考内容,欢迎随时关注新东方在线专四专八频道。

  Mars has provoked much speculation on the possibilities _1_

  of life beyond Earth than any planet in the Solar System. _2_

  The presence of water is a prerequisite for the existing of life. _3_

  Therefore, "follow the water" has been NASA' s chief guideline for the exploration of red planet. Although Mars experiences _4_

  seasons like on Earth and has polar caps which composed of _5_

  cold. But evidence is rapidly accumulation Mars was once much _6_

  wetter, with amore clement climate. This evidence comes from orbiting satellites and from data collected by roving landers.

  Since 1970s, space probes to Mars have revealed numerous _7_

  Features apparent carved by flowing water, such as winding, branched valleys resembling dried-out streambeds and giant outflow channels gouged by catastrophic floods. Recent high-resolution imagery from the Mars Global Surveyor Mars Orbiter Camera and the Mars Odyssey THEMIS reveal numerous _8_

  examples of branched valleys that form tightly-packed, integrated drainage systems. These channels origins at topographic high _9_

  points; the valleys widen "downstream" some even displaying inner valleys. The valley networks exhibit morphometric characteristics, including network densities, comparative to these _10_

  of terrestrial drainage basins. These features were most likely produced by rainfall, during wetter, warmer periods in the past.

  答案:

  1. much-more

  2. any + other

  3. existing-existence

  4. a-the

  5. 去掉which

  6. Mars前加that

  7. 1970s前加the

  8. reveal- reveals

  9. origins-originates

  10. comparative-comparable

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