A. 顺接:两个命题可以同义替换
例:A certain additive put in gasoline to reduce air pollution is actually_______ground water, a finding that shows that even the most well-intentioned fixes can sometimes ______.
A. liquefying .. founder
B. contaminating .. backfire
C. purifying .. boomerang
D. saturating .. reciprocate
E. polluting .. prevail
根据逗号之后的含义 这是一个表明了的研究结果,证明是顺接,则两个空格应为近义词。前一空格讲述某物质对地下水的作用,根据后面的 即便初衷最好的措施也会,判断整个事情是坏事,则前面应当是 污染地下水的意思,而后面应当是 产生不好的后果的意思,最终选择B。
B. 逆接:两个命题可以反义替换
例:No longer considered ________, the belief that all of Puerto Rico s indigenous Taino people perished centuries ago appears to be a _______ now that modern Taino descendants have come forward.
A. conclusive .. reality
B. tenable .. misconception
C. mythical .. possibility
D. erroneous .. delusion
E. hypothetical .. digression
逗号之前一个重要的否定词no longer 告诉我们两个命题的相反性。根据后面的句意充分理解发现,当现代的某种人的后代出现的时候,原先号称这些人已经消亡 (perish )的想法自然就变成了错误的想法,而相反过去后,第一个空格自然就是 被人普遍相信的东西,故而选B。tenable :站得住脚的,misconception :误区。
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