第35题: [单项选择]{{B}} Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. Catching runaway criminals. B. Scratching the hidden bombs. C. Patrolling the dangerous town. D. Drug - sniffing and bomb - sniffing. 参考答案:D 答案解析:[听力原文]
What do dogs learn during the 9 - week training
[详细解答] 在为期9周的训练中,它们要学习嗅毒品或炸弹。