以下是引用YesWeCanWin在2009-5-30 14:48:00的发言：JJ 作者说 GWD 有？有那位同学找到原题了吗？版本 710 V36 cotton 和soybean GWD 有？ 棉花和大豆的我感觉在哪里做过的，但是题目不一样的，我选了个跟insect有关的选项，这题是乱来的，因为没时间了 我找到几个老JJ:不知道是不是 参考： 31. [版本1]有一种农药, 对棉花有害, 但对大豆没有害处, 不过如果用了, 一年之后都会留在土壤里, 有一个农民, 在不同的地里种了大豆和棉花, 结果他那片地都没用那种农药, 问原因. 我选的是那个农民每隔一年就把大豆和棉花换过来种, 据说这样土地会变得很肥沃
[版本2]农民一般用一种杀虫剂对付一种昆虫以保护某一作物然而现在发现这种杀虫剂对这种害虫没有影响但是农民还是用这种杀虫剂保护作物解释我选因为这种杀虫剂会减少其他对这种农作物有害的昆虫 [版本3]农夫在田里采用一种杀虫剂但杀虫剂会产生一种生物此种虫子对杀虫有抗体并且只会存活一年问农户会怎么做我选农夫会隔一年在不同的地里使用杀虫剂
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 made out of cotton. D. Few consumers 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. 但是我怀疑考题是GWD的变体。
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发表于 2009-5-30 13:44:00
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