The first scoop of Martian soil analyzed by Curiosity Rover’s built-in laboratory has revealed a high amount of water in the soil, ___1___ to NASA.

　　“One of the most exciting results from this ___2___ first solid sample obtained by Curiosity is the high ___3___ (percent) of water in the soil,” said Curiosity researcher Laurie Leshin, of the Rensselaer Polytechnic Institute. “About 2 percent of the soil on the surface of Mars is made ___4___ of water, which is a great resource, and interesting ___5___ (science).”

　　Researchers made their ___6___ (find) using Curiosity’s Sample Analysis at Mars (SAM) unit, ___7___ includes three sophisticated instruments.

　　SAM allowed the scientists to identify a wide range of chemical compounds and to calculate the ratios of different isotopes of the sample’s key elements.

　　The same soil sample, when ___8___ (heat) to 835 degrees Celsius, showed significant amounts of carbon dioxide, oxygen and various sulfur compounds.

　　The heated ___9___ (collect) of Martian dust, dirt and fine soil, gathered by the rover’s scoop at a location called Rocknest, also revealed a compound ___11___ (contain) chlorine and oxygen.

　　Up until this finding, the scientists ___12___ (think) those materials only existed in the high-latitude areas of Mars. By finding them at Curiosity’s current location near the equator of Mars, the researchers say that perhaps they could be found all over the planet.

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