GMAT申友逻辑CR题库-Last year a global disturbance of weather patterns disrupted harvests in many of the world’s important agricultural areas. Worldwide production-OG2022-真题答案解析

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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.

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答案：

Argument Co

nstruction

Situation A weather disturbance last year disrupted harvests worldwide but did not

reduce production of soybeans, a protein source for both people and livestock. Soybean prices increased nonetheless, likely a result of the weather.

Reasoning What evidence would suggest that the weather disturbance caused the increase in soybean prices even though it did not reduce soybean production?

Prices tend to increase when the supply of a product falls relative to the

demand for the product. But the production of soybeans did not fall. Evidence that the weather disturbance either hindered the global distribution of

soybeans or increased global demand for soybeans could support the claim that the weather disturbance caused the increase in soybean prices.

A. Correct. If the weather disturbance reduced the anchovy harvest, and anchovies provide protein for livestock just as soybeans do, then more soybeans for livestock feed would be needed to compensate for the lack of anchovies. The resulting increase in

demand for soybeans could thus have increased global soybean prices.

B. This is not surprising, given that the weather disturbance did not severely affect the soybean-producing countries, but it does not explain how the weather disturbance could have caused soybean prices to increase.

C. The rise in soybean prices after the earlier weather disturbance could easily have been a coincidence. Or, unlike last year’s disturbance, the earlier disturbance could have

reduced soybean production.

D. This suggests that demand for soybeans should have fallen as a result of the weather disturbance, so it does not explain why soybean prices rose.

E. If soybean prices were unusually low for some temporary reason when the weather disturbance occurred, they might have been likely to rise back to normal levels even without the weather disturbance.