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Never before has the been faced with such a threat as has happened in the past f

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Never before has the been faced with such a threat as has happened in the past f

Never before has the ________ been faced with such a threat as has happened in the past five decades

A. human race 　B. people　 C. mankind D. man

 

试题答案

A

标签：withfacedsuchasthreat

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