Once a picture is proved to be a forgery, it becomes quite _______.

A．invaluable

B．priceless

C．unworthy

D．worthless

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参考答案

答案解析

【译文】一旦一幅画被证实是赝品，它就变得毫无价值。
【解析】易混形容词的区别。四个选项中只有worthless表示“没有价值的”，D为正确选项，而invaluable和priceless都表示“极有价值的”，与句意相反。Unworthy“不值的，不足取的”。常作表语形容词，后跟介词of，如：a plan unworthy of our consideration(不值得我们考虑的计划)，在语意和语法上都不符合句子要求。

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