The nine coal miners ________ in the coal mine for 20 hours before we came to their rescue in Yansha

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• 下列四组生物中，都属于真核生物的一组是[]A．大肠杆菌和草履虫B．SARS病毒和蘑菇C．蓝藻和酵母菌D．衣藻和喇叭虫-高一生物
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• Experiments of this kind ________ in both the U. S. and Europe well before the Second World War.[ ]A
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