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我的答案:BCCDC
正确答案:BBAEC
经典的总分结构,P1引出问题,后面给出假说
P1金星上的特点通常归结于lava,但也是canali的原因,问题在于识别出一种液体满足要求
P2给出两种假说,但都有缺陷:可能是低v的,转折,固化太快了。另一种,次表面的fluid,但也不清楚
P3其他假说,carbon lava,水等。液体sulfur太慢了。转折,carbon——rich lavas 可能满足要求。
第二题:定位关键“the uniform width”这是那段话的主语,而非canali是主语。B.Their consistent width along their entire length.
第三题
原文:defies simple explanations and suggests a source different from basaltic lava
第四题
作者最同意:
原文定位:Alternative theories propose that insulating covers or subsurface flows might retard the cooling process, but whether these could result in the canali’ s meandering paths is unclear
D) A cooler Venusian climate这里原文只是一种猜测,重点是后句
0ther potential canali-forming liquids have been proposed, including liquid sulfur, carbonatite lavas, and water, assuming Venus once had a cooler climate. Liquid sulfur, a potential byproduct of atmosphere icsulfur reacting with Venusian rocks, evaporates too swiftly to form extended channels. Carbonate-rich lavas, however, have the right
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