英语选词天空Once a picture is proved to be a forgery,it becomes qu

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英语选词天空
Once a picture is proved to be a forgery,it becomes quite_______.
A.invaluable B.priceless C.unworthy D.worthless
请问怎么辨析这些词?

此题很明显,所填形容词含义应该是“不值钱的”之意,而A和B都是“无价的”、“十分贵重的”,故可首先排除；剩下C和D,含义都是“不值钱”之意,然而此处还使用了一个系表结构become+adj.,因此所使用的形容词必须能够做表语,而unworthy只能做定语,所以答案为D!

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