大全-1-11. Some observers have concluded that the rise in the price of pepper means that the switch by some growers from pepper to cocoa left those growers no better off than if none of them had switched; this conclusion, however, is unwarranted because it can be inferred to be likely that

(A) those growers could not have foreseen how high the price of pepper would go

(B) the initial cost involved in switching from pepper to cocoa is substantial

(C) supplies of pepper would not be as low as they are if those growers had not switched crops

(D) cocoa crops are as susceptible to being reduced by bad weather as are pepper crops(c)

(E) as more growers turn to growing cocoa, cocoa supplies will increase and the price of cocoa will fall precipitously

请问e为什么不可以亚

C是对的.

C是非常正常的information flow. pepper price低的时候, 就有人不种pepper, 种的人少了, price自然上升, 但如果当初这些人不switch的话, price可能还是很低. 所以observer的说法不对.

E的推理太远了, 另外注意细节,E里面有precipitously, 这个从题目里面根本无法推出.