二级笔译题库/词汇与语法

Trial and error are the source of our knowledge.

  • A is
  • B were
  • C has
  • D have been
参考答案: A
解题思路: 时态应用。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”。>>>立即刷题