第6题: [单项选择]简易呼吸器每次的送气量及呼吸速率为() A. 200~400ml/次,22~24次/分 B. 200~400ml/次,16~20次/分 C. 500~1000ml/次,22~24次/分 D. 500~1000ml/次,16~20次/分 E. 1000~1500ml/次,22~24次/分 参考答案:D
第13题:[单选题] After living in Paris for fifty years he returned to the small town _____ he grew up as a child. A. which B. where C. that D. when 参考答案:B 定语从句中不缺成分,并且先行词是the small town表示地点,因此选择where。A中which在定语从句作主语/宾语,因此排除;C中that在定语从句作主语/宾语,因此排除;D中when在定语从句中不作成分,但是先行词表示时间,因此排除。故选B。