They have learned about ______ in recent years.选择一

They have learned about ______ in recent years.选择一项:A.several hundreds English w

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计算机系统漏洞实质上也是一种病毒。()A.正确B.错误

计算机系统漏洞实质上也是一种病毒。()A.正确B.错误

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— ______ will it take me to walk there?

— ______ will it take me to walk there?— About ten minutes.选择一项:A.How farB.How l

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