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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
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. The latest job report gave a mixed picture of employment in the US, leaving investors without any clear sign ________ the economy is improving.

A.which B.that C.what D.if
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.Thelatestjobreportgaveamixedp