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  3. Over the weekend, NASA’ s newest Mars rover, the Curiosity, which landed early on Aug. 6 after an eight-month flight, started se

Over the weekend, NASA’ s newest Mars rover, the Curiosity, which landed early on Aug. 6 after an eight-month flight, started se

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问题     Over the weekend, NASA’ s newest Mars rover, the Curiosity, which landed early on Aug. 6 after an eight-month flight, started sending back a 360-degree high-resolution panorama of its surroundings.
    At a news conference on Wednesday, John P. Grotzinger, a professor of geology at the California Institute of Technology who serves as the mission’ s project scientist, compared the view with a place just a few hours’ drive from Pasadena, Calif, and NASA’s Jet Propulsion Laboratory, the rover’s birthplace. "You would really be forgiven for thinking that NASA was trying to pull a fast one on you," he said, "and we actually put a rover out in the Mojave Desert and took a picture—a little L.A.(Los Angeles)smog coming in there." He added, "To a certain extent, the first impression you get is how Earth-like it seems."
    Where the Curiosity actually sits is a 96-mile-wide crater named Gale near the Martian equator. To the north, the images show part of the crater rim that is believed to have been eroded by flowing water. To the south is a 3.4-mile-high peak that the scientists call Mount Sharp, which Curiosity is meant to reach and to climb. By investigating the layers of sedimentary rock on Mount Sharp, mission scientists hope to reconstruct the climate and environment of early Mars and tell whether it could have been once been habitable for life.
    The photos also show marks that Curiosity has made at the landing site. As Curiosity was lowered to the surface of Mars, blasts from the descent-stage engines created indentations in the nearby soil, exposing the bedrock below. This exposed bedrock is likely to be one of the first areas of scientific exploration on the rover’ s planned two-year journey.
    After the flawless landing, the first week of operations of the rover on the ground also proceeded almost perfectly, too, as engineers started checking out the rover’s system, deployed the high-gain antenna, and raised the mast that holds the cameras.
    So far, no significant trouble has arisen. The weather instrument experienced a problem that engineers figured out a day later. The rover’s internal temperatures are slightly warmer than expected, possibly because the crater is warmer than predicted or because NASA’s computer models of Curiosity were not quite right. Worries about overheating could put constraints on when certain instruments can be used. But the heat is also a boon, reducing the energy Curiosity needs to warm up its joints and wheels before moving.
It can be inferred from the passage that the rover’ s investigation______.
选项 A、is likely to start with the study of the rocks on Mars
B、is determined on the reconstruction of the climate on Mars
C、started immediately after the rover’s perfect landing
D、can only begin after a week’ s preparation on the ground
答案A
解析 根据题干关键词定位至第四段。本段最后一句指出，探测器着陆造成的深坑很有可能是进行科学研究的第一片区域。并且在第三段的最后一句指出，探测器计划通过研究附近山上的岩石层来重现火星早期的气候和环境，并判断火星是否曾经适合生命居住。因此．探测器的研究很有可能是从研究岩石开始。A项“有可能从研究火星上的岩石开始”与原文意思相符，为正确答案。B项“建立在对火星气候重新构筑的基础上”，C项“在探测器完美着陆之后马上开始”，D项“只有在陆地上准备一周后才能开始”，均与原文不符。
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