Often major economic shifts are so gradual that they are indistinguishable at first from ordinary fluctuations in the financial markets.


so gradual that they are indistinguishable

so gradual that they are unable to be distinguished

考题讲解

题目分析:
indistinguishable表示的是事物本身的属性,而are unable to be distinguished表达的是“一种人为的没有能力”,并不是事物本身的属性。答案为(A)。

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