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题目选项分析

Sunflowers growing in pots were placed, with their roots submerged, in the pond contaminated with radioactive elements. The sunflowers kept growing; in the process, they absorbed radioactive elements. Within twelve days, 85 percent of the radioactive elements were removed from the water, which is no less than can be accomplished with the much more expensive conventional filtration techniques. Scientists therefore propose using sunflowers for decontamination wherever there are radioactively contaminated ponds.

Which of the following, if true, points to a limitation on the applicability of the proposed method of decontamination?

【选项】Some plants other than sunflowers can also remove radioactive elements from water.

选项是否正确?

答对用户笔记

freya750
0人
freya750 2020-09-06 23:07:34
在被放射物质污染了的池塘里种太阳花,把根没入;
太阳花能够生长;且吸收了放射物质。
吸收的量不比昂贵的传统过滤技术少。
C:无论有没有被放射物污染了的池塘,都用太阳花去污染
要看这个proposal的limitation是什么!other than扩大考虑范围,无关。

题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:GWD-257
难度: 难
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