GWD 10 - 40 B/C？

dingrhan

GWD10 - 40 答案存在两个版本 B/C。 我觉得C is better。 你呢？

10 - Q40:

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?

The cost of raising soybeans has increased significantly over the past several years and is expected to continue to climb.

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.

In the past several years, there has been no sharp increase in the demand for cotton and for goods made out of cotton.

Few consumers would be willing to pay significantly higher prices for cotton goods than they are now paying.

The species of insect that has infested cotton plants has never been known to attack soybean plants.

B/C

dingrhan

答案到底是什么呢？

梦精灵_Fly

B.就是说杀虫剂很好用了,Cotton的产量不会受到影响了，Ortoria这个地方的农民种Cotton也卖不到好价钱了。

z520m

应该是b吧！因为ets给出了关于Insect infestations，如果答案中没有用到，就多余了，可是逻辑的提干不会给多余信息的

jeff_wu

应该是b， 我选的时候也选c，看错了，完全凭感觉做的。：）

c的错误就在于，1， 说的是past 3 years。（我看题目的时候脑子里就构思出一个weaken的方式，就是未来几年需求不会增长，那么增加供给价格反而会下跌。但c说的是过去3年。）而且从相关无关角度说，题目说未来几年，选项说过去几年，也可以说是个无关选项了。

2， 如果过去3年需求没有大幅度增加，而供给下降，则可能解释过去的价格上升。（题干中说病虫导致价格上升。）所以c实际只是给题干一个解释，即使需求不变，供给下降，也可能导致价格上升。c不能weaken