GWD 31-17

leohymo · 发表于 2005-9-22 07:59:00

17: It is crucially important to farmers that the herbicides they use to control weeds not (?) damage their crops. One very effective herbicide is safe for corn, but soybeans are damaged even by the herbicide’s residue, which remains in the soil more than a year after the herbicide is applied. Soybeans and corn are not sown together in the same filed; nevertheless, most farmers are reluctant to use the herbicide on their corn.

Which of the following, if true, provides the strongest justification for the farmers’ reluctance?

A: The residue of the herbicide in the soil a year after application is not enough to control most weeds effectively.

B: To maintain the nutrients in the soil, corn and soybeans are often planted in a field in alternate years.

C: The demand for soybeans is growing faster than is the demand for corn.

D: For maximum yield, soybean plants are grown closer together to each other than are corn plants.

E: The application of herbicides is less critical for soybean than for corn crops.

B?

howardwang · 发表于 2005-9-22 11:07:00

你的选择没错。

ayang1017 · 发表于 2005-10-7 22:08:00

一种非常有效的杀虫剂，对玉米来说很安全对豆角来说受伤害的，杀虫剂将在使用后保存在土壤里超过一年。豆角和玉米没有种在一起大多数农民不愿意在玉米上用农药。

我怎么认为选c

我觉得b的表述有问题

B: To maintain the nutrients in the soil, corn and soybeans are often planted in a field in alternate years.这里的营养与文中的杀虫剂没有关系啊。

c，说豆角比玉米需要的更多，文中的意思不就用不用杀虫剂将伤害一方的利益么？？

隐身会员 · 发表于 2005-10-7 22:23:00

B.

C错。选C的错误在于加入了自己的assumption。你认为需求增长快就会导致farmer都种黄豆？原文没有任何这样的提示，这是ETS的典型的trick。再有你的理解有误：是增长快，并不是绝对需求高。中国GDP增长过于美国（grow faster），绝对值要低很多。

earlybirdcyu · 发表于 2005-10-11 17:00:00

agree on B

snow_girl_ · 发表于 2005-11-12 11:49:00

应该是B。文中就是说种植玉米和豆角的事，只有B有关

jinni · 发表于 2006-4-10 11:55:00

以下是引用ayang1017在2005-10-7 22:08:00的发言：

一种非常有效的杀虫剂，对玉米来说很安全对豆角来说受伤害的，杀虫剂将在使用后保存在土壤里超过一年。豆角和玉米没有种在一起大多数农民不愿意在玉米上用农药。

我怎么认为选c

我觉得b的表述有问题

B: To maintain the nutrients in the soil, corn and soybeans are often planted in a field in alternate years.这里的营养与文中的杀虫剂没有关系啊。

c，说豆角比玉米需要的更多，文中的意思不就用不用杀虫剂将伤害一方的利益么？？

是B，你对B选项的侧重点没有理解，B说为了保持土地的养分，所以农民种corn和soybeans是按年交叉种植的，也就是一年corn，一年soybeans。

所以如果第一年种了corn用了农药，第二年农药还有残余，会对第二年种的soybeans有影响。

rosmarine · 发表于 2006-6-3 15:47:00

请教楼上，文中说了Soybeans and corn are not sown together in the same filed，B怎么可以让它们又种到一起呢？

rosmarine · 发表于 2006-6-4 18:52:00

stellaleigh · 发表于 2006-6-6 14:11:00

文中：One very effective herbicide is safe for corn, but soybeans are damaged even by the herbicide’s residue

选项：To maintain the nutrients in the soil, corn and soybeans are often planted in a field in alternate years.

两种庄稼往往相继种。相继种的坏处是soybeean can be damaged by residue. providing the justification for famer who are reluctant to use herbicide.

本贴相关题目 TN-21-CR-17 (JGPD)

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GWD 31-17

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