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标题: GWD-1-19 [打印本页]
作者: linson    时间: 2004-8-15 23:03
标题: GWD-1-19

Q19:


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?






  1. Some plants other than sunflowers can also remove radioactive elements from water.

  2. The water in many ponds contaminated with radioactive elements is so cold that it would kill sunflowers whose roots were submerged in it.

  3. Sunflowers that grow with their roots submerged in water grow less well than sunflowers growing under optimal conditions on dry land.

  4. Only species of sunflowers with large leaves can have their roots submerged in water and still keep growing.

  5. In ponds in which the circulation of the water is artificially increased, sunflowers absorb radioactive elements far faster than they do in other ponds.

   Answer:


这道题问计划的局限性。答案好像是C。我选的是B. 提干中并没有标明sunflower 长得不好就不能decontamination. 可是B选项又对题干的前提进行了否定，好像也不对。 难搞


请NN指点


作者: 我笨，我努力    时间: 2004-8-16 06:57
我也选B.再顶一下!
作者: dream1111    时间: 2004-8-17 06:34

B my answer.

I think C is a unrelated statement.

作者: wudongxu750820    时间: 2004-9-14 20:59
I agree. B is the best
作者: joe11    时间: 2004-9-14 21:32

      B

作者: victorzheng    时间: 2004-9-23 11:29
b
作者: asicschu    时间: 2004-11-1 16:26
選B喔!!
作者: tempture    时间: 2004-11-25 09:02

我的GWD-1-19不是逻辑题啊，这道怎么来的？

作者: flyfly    时间: 2004-12-18 15:29

B

作者: Fabulous    时间: 2005-1-11 08:44

这是GWD 1-19吗?

作者: channing76    时间: 2005-6-20 21:43
c包含着无关比较（than sunflowers growing under optimal conditions on dry land.）选b;
作者: jxjiao    时间: 2005-12-10 03:01


为什么不选D，only some species不是很突出limitation嘛！但是B我也不知道错哪


召唤牛牛


[此贴子已经被作者于2005-12-10 3:04:49编辑过]
作者: urchinwang    时间: 2005-12-10 15:27

D不 对，因为少量的种类可以有大量的数量存在，所以也可以用来净化啊 ！

作者: steveyangxt    时间: 2005-12-13 09:36
肯定是b顶以下
作者: halcyonline    时间: 2006-8-30 12:38
我在下载的GWD-1中也没发现这道題。不过，看过之后，觉得选Ｂ更合适
作者: 清清小蚂蚁    时间: 2006-9-5 08:33

总结：

c包含着无关比较（than sunflowers growing under optimal conditions on dry land.）选b;图片点击可在新窗口打开查看

D不 对，因为少量的种类可以有大量的数量存在，所以也可以用来净化啊 ！

我在下载的GWD-1中也没发现这道題。不过，看过之后，觉得选Ｂ更合适

作者: gonghao    时间: 2006-9-5 09:25

B没问题

C和文章叙述相背

作者: toapplezyj    时间: 2006-10-2 14:24
这个不是GWD1-19.但这题我也选B.the correct answer is C??
作者: 娜娜仁    时间: 2006-11-5 21:32

这是第二套19题

作者: jesuisdesole    时间: 2008-5-8 09:41
b
作者: 伯爵奶茶    时间: 2009-4-2 15:50
题号弄错了！
作者: AMBER513    时间: 2019-9-10 15:57
看一下！               



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