第33题: [单项选择]Passage One Questions 26 to 28 are based on the passage you have just heard.[A] 11-week course for control duty. [C] 9-week course for control duty. [B] 11-week course for patrol duty. [D] 9-week course for patrol duty. 参考答案:B 答案解析:[听力原文] What is the first stage of training for the dogs’
信息明示题。文章提到狗的第一个训练阶段是an 11-week c
第34题: [单项选择]硫喷妥钠单独一次静脉25mg/kg可维持() A. 大于60分钟 B. 大于90分钟 C. 45分钟左右 D. 小于30分钟 E. 小于20分钟 参考答案:C