OG CR题目求助

GMAT760!!

Last year a global disturbance of weather patterns disrupted harvests in many of the world’s
important agricultural areas. Worldwide production of soybeans, an important source of protein
for people and livestock alike, was not adversely affected, however. Indeed, last year’s soybean
crop was actually slightly larger than average. Nevertheless, the weather phenomenon is probably
responsible for a recent increase in the world price of soybeans.
Which of the following, if true, provides the strongest justification for the attribution of the
increase in soybean prices to the weather phenomenon?
(A) Last year’s harvest of anchovies, which provide an important protein source for livestock, was
disrupted by the effects of the weather phenomenon.
(B) Most countries that produce soybeans for export had above-average harvests of a number of
food crops other than soybeans last year.
(C) The world price of soybeans also rose several years ago, immediately after an earlier occurrence
of a similar global weather disturbance.
(D) Heavy rains attributable to the weather phenomenon improved grazing pastures last year,
allowing farmers in many parts of the world to reduce their dependence on supplemental feed.
(E) Prior to last year, soybean prices had been falling for several years.  


这里为什么 E 是错的 逻辑没明白（难道不能说明 我的价格之前一直是下降的，然后去年因为有雷暴风，所以价格上升了。这个难道证明是突然变化的天气才是使我价格上升的原因吗

leonlo

绝逼是A啊，豆子和凤尾鱼提供牲畜蛋白，上年鱼少了，豆子涨价。。E是无关

Bensontuo

原文資訊有衝突, 所以題目要我們去解決的是這個衝突以及矛盾。

Premise 1 - 天氣的劇烈變動影響了非常多的農業區域

premise 2 - 人以及牲畜重要的蛋白質來源 - 黃豆的產量並沒有被劇烈的影響, 反而產量有小幅度的上升

Conclusion - 然而, 天氣的劇烈變動必定是黃豆價格上升的最主要原因

經濟學裡, 給定需求不變, 而供給上升的情況, 價格必定下降。 而供給上升, 價格卻上升, 那就代表需求上升的量比供給上升的量還大。

所以, 我們要找的是, 有沒有其他黃豆的替代財的供給是減少到一個點, 其需求大量轉移到黃豆身上。

A. 另外一種作為主要給人以及牲畜蛋白質來源的食物產量因為氣候的影響而減少 - 所以找尋其他可以替代的蛋白質來源, 黃豆的需求自然上升了


E. 過去幾年的價格減少, 就算在天氣劇烈變動後的價格上升, 也不能代表是因為天氣劇烈變動所以價格才上升, 有沒有可能是因為計劃經濟或是關稅戰的原因所以價格減少, 而計劃經濟改變路線以及關稅戰停止或是開打的時間點恰巧跟天氣劇烈變動的時間點相同？

GMAT760!!

Bensontuo 发表于 2019-7-18 19:37
原文資訊有衝突, 所以題目要我們去解決的是這個衝突以及矛盾。

Premise 1 - 天氣的劇烈變動影響了非常多的 ...

我懂了 谢谢