Contrary to those who fear the impact of invasive species on native plants, the biologists contend that the threat posed to biod

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问题 Contrary to those who fear the impact of invasive species on native plants, the biologists contend that the threat posed to biodiversity by nonnative plants is often (i)________. For instance, a study of garlic mustard, a nonnative plant thriving in the forest, found that the garlic mustard abundance in forest plots is not (ii)________the number of others species there.
Blank (i)      Blank (ii)
A. uniform     D. sustained by
B. exaggerated E. related to
C. subtle      F. consistent with

选项

答案B,E

解析 空格(i)所在部分的逻辑连接词是contrary to,表转折,前后两部分语义相反。前面说与那些害怕外来物种入侵影响本地物种(fear the impact of invasive species on native plants)相反的是……,显然后面应该要表达外来物种没有影响的含义,后半句说生物学家认为非本地物种对生物多样性的威胁是________,那么空格(i)要填对威胁的否定,这样才能跟前句相契合,B项exaggerated(夸大的)符合。空格(ii)的逻辑连接词是for instance,表示对于前面内容的解释,因此与前句语义相同(外来物种不会影响本地物种)。空格表示药用蒜芥这种外来物种的繁盛与本地物种的关系。既然没有威胁,所以这两个物种的数量之间应该是没有关系的,空格前面有否定词not,那么空格应该填“有关系的”,选项E related to最符合。注意干扰F项consistent with,加上not就表示“不一致”,那就有可能是此消彼长的关系,就有可能是有影响,所以不能选择F。空格(i)很多同学都错选了C项subtle,认为语义上也可以。但这里强调对比,一些人担忧害怕外来物种入侵、影响本地物种,而生物学家认为前面这些人认为的物种入侵威胁是________的,这里威胁被exaggerated要比威胁是subtle更合适,表示威胁被夸大了,而且subtle的释义“hard to notice or see”跟minimal“微小”是有区别的,看不见的东西不一定是微小的。GRE单词要更注重语境含义,而非单纯的中文含义,所以笔者建议大家不要再把subtle记成“微妙”这个含义了,记成“精妙,难懂”即可。
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