( )We’veDone once but failed.We’ll have toDo it__________tim

( )We’veDone once but failed.We’ll have toDo it__________time.A.a second B.the s

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Directions:In each of the following groups of words,there ar

Directions:In each of the following groups of words,there are four underlined le

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( )The passage is mainly about__________.

( )The passage is mainly about__________.A.the advantages andDisadvantages of ec

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增值税税控系统专用设备自购买之日起3年内 因质量问题无法正常使用的,由(  )负责免费维修, 无法维修的免费更换。

增值税税控系统专用设备自购买之日起3年内 因质量问题无法正常使用的,由(  )负责免费维修, 无法维修的免费更换。A.专用设备生产者 B.国家税务局 C.专

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