OG(VR)24

[lovekyoko]

24. In the arid land along the Colorado River, use of the river's water supply is strictly controlled：farms along the river each have a limited allocation that they are allowed to use for irrigation．But the trees that grow in narrow strips along the river’s banks also use its water．Clearly, therefore，if farmers were to remove those trees，more water would be available for crop irrigation．

Which of the following，if true，most seriously weakens the argument?
(A) The trees along the river's banks shelter it from the sun and wind，thereby greatly reducing the amount of water lost through evaporation．
(B) Owners of farms along the river will probably not undertake the expense of cutting down trees along the banks unless they are granted a greater allocation of water in return．
(C) Many of the tree species currently found along the river's banks are specifically adapted to growing in places where tree roots remain constantly wet．
(D) The strip of land where trees grow along the river's banks would not be suitable for growing crops if the trees were removed．
(E) The distribution of water allocations for irrigation is intended to prevent farms farther upstream from using water needed by farms farther downstream．


答案是A


這題題目我是看的懂 但是對於A的答案 我覺得我很模糊

這題的結論是 只要樹被移除 就有更多的水可以用來灌溉

那是不是我要反駁結論(Clearly, therefore，if farmers were to remove those trees，more water would be available for crop irrigation)
用他因反駁嗎?? 反駁不是因為樹被移除

可是A的答案是說 是因為樹擋住了太陽和風 因此降低了所份蒸發的量

總之 希望哪位牛人可以再清楚一點講 感謝

[larry.tw]

結論: 移除樹
weaken: 不應該移除樹

A的答案:因為樹擋住了太陽和風 因此降低了所份蒸發的量 =>所以不應該移除樹

[Huang Hsin-Yi]

結論: 移除樹

原因:種樹會用水
weaken: 不應該移除樹
這樣的weaken是選不出答案的因為A,B,C,D都符合

weaken原因
A的答案:因為樹擋住了太陽和風 因此降低了所份蒸發的量 =>所以不應該移除樹

參考看看