Trial and error are the source of our knowledge.

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问题 Trial and error are the source of our knowledge.

选项 A、is
B、were
C、has
D、have been

答案A

解析短语trial and error(反复实验)是单数主语，后面谓语动词应用第三人称单数的“is”而非“are”。

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本试题收录于： CATTI二级笔译综合能力题库翻译专业资格（CATTI）分类

CATTI二级笔译综合能力

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Trial and error are the source of our knowledge.

CATTI二级笔译综合能力

翻译专业资格（CATTI）

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