第27题: [单项选择]What is troubling Kerry Packer A. He did n’ t know who should pay the repair bill. B. He was accused of improper jet piloting. C. He was attacked by a kangaroo. D. His private jet killed a kangaroo. 参考答案:A 答案解析:[听力原文]27-28
Australia’s richest man Kerry Packer is engaged in a legal tussle with a local counc
第28题: [单项选择]杀灭细菌芽孢最有效的方法是( ) A. 煮沸法 B. 巴氏消毒法 C. 高压蒸汽灭菌法 D. 紫外线照射 E. 90%乙醇消毒 参考答案:C