高三英语阅读理解限时训练（39）
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A Plan For Exploring Mars
NASA is moving ahead with plans to put a long-armed Lander on Mars’ icy North Pole to search for clues for water and possible signs of life．
The $386 million Phoenix Mars is planned to touch down in the Martian arctic in 2008．The stationary probe will use its robotic arm to dig into the icy land and pick up soil samples to analyze．In 2002, the Mars Odyssey orbiter spotted evidence of ice-rich soil near the arctic surface．
Scientists hope the Phoenix mission will find clues to the geologic history of water on the Red Planet and determine whether microbes existed in the ice．
