请教一道逻辑题

johnniewood

Insect infestations in certain cotton-growing regions of the world have caused dramatic increases in the price of cotton on the world market. By contrast, the price of soybeans has long remained stable. Knowing that cotton plants mature quickly, many soybean growers in Ortovia plan to cease growing soybeans and begin raising cotton instead, thereby taking advantage of the high price of cotton to increase their income significantly, at least over the next several years.

Which of the following, if true, most seriously weakens the plan's chances for success?

A. The cost of raising soybeans has increased significantly over the past several years and is expected to continue to climb.
B. Tests of a newly developed, inexpensive pesticide have shown it to be both environmentally safe and effective against the insects that have infested cotton crops.
C. In the past several years, there has been no sharp increase in the demand for cotton and for goods out of cotton.
D. Few customers would be willing to pay significantly higher prices for cotton goods than they are now paying.
E. The species of insect that has infested cotton plants has never been known to attack soybean plants.

请问答案是哪个？

everine

B~

因为棉花有害虫所以涨价
种豆子的人就觉得种棉花可以卖好价钱就改行种棉花去了
问削弱这个计划的可能成功的概率~
B说有一种不贵的杀棉花害虫的药出来了 那棉花就不大可能涨价了~~

johnniewood

Everine, 请问D为何不对呢？价格太高大家不愿意买，收入不就不能提高了吗？

B~

因为棉花有害虫所以涨价
种豆子的人就觉得种棉花可以卖好价钱就改行种棉花去了
问削弱这个计划的可能成功的概率~
B说有一种不贵的杀棉花害虫的药出来了 那棉花就不大可能涨价了~~

-- by 会员 everine (2010/8/11 0:28:09)

gmat小菜鸟

lz，the price they are paying now也就是题目里所说的经过dramatic increase的price。而关于比这个还要高的价格，有没有人愿意支付和这个问题是无关的。。。。。

johnniewood

我明白你的意思了。你的意思是说，现在支付的价格已经是涨价之后的价格了；但并没有说会再涨价；所以再涨价之后怎么样其实已经无关了。我这样理解对吗？

lz，the price they are paying now也就是题目里所说的经过dramatic increase的price。而关于比这个还要高的价格，有没有人愿意支付和这个问题是无关的。。。。。

-- by 会员 gmat小菜鸟 (2010/8/11 23:46:12)

gmat小菜鸟

恩。。。我认为就是这样的。。。。

fengshou

哈 昨天Prep模拟就遇到这道了。。。