填空题 If man continues to interfere with the balance of nature, it is possible that man may soon become extinct.
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【正确答案】 1、NG    
【答案解析】[详解] 第三段倒数第二句“If man continues to interfere... it is possible that some animals and birds may soon become extinct"，而文中并没提到人类会因此很快灭绝。