og10-165疑问

Country Y uses its scarce foreign-exchange reserves to buy scrap iron for recycling into steel. Although the steel thus produced earns more foreign exchange than it costs, that policy is foolish. Country Y’s own territory has vast deposits of iron ore, which can be mined with minimal expenditure of foreign exchange.

Which of the following, if true, provides the strongest support for Country Y’s policy of buying scrap iron broad?

(A) The price of scrap iron on international markets rose significantly in 1987.

(B) Country Y’s foreign-exchange reserves dropped significantly in 1987.

(C) There is virtually no difference in quality between steel produced from scrap iron and that produced from iron ore.

(D) Scrap iron is now used in the production of roughly half the steel used in the world today, and experts predict that scrap iron will be used even more extensively in the future.
            (E)

(E) Furnaces that process scrap iron can be built and operated in Country Y with substantially less foreign exchange than can furnaces that process iron ore.

答案是 E 可我觉得C对啊 只有相同才有可比性啊 ？ 还有E为什么对呢？谢谢各位啦 ！

原文大意——

Y国用外币购买铁定生产钢铁，而后卖掉换去更多外币。这种做法愚蠢，因为Y国可以开发自己的铁矿，而不用外币去买铁定。

读完题后，就知道，本题关键在于，Y国为什么不去开发自己的铁定。

E恰好说出了原因：开发成本比直接购买成本高。所以正确。

C说，用买来铁定和自己开发的铁定生产出来的钢质量差不多。无关。

请支持调大字号的建议，谢谢。

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