题型:问答题 简答题 The man _____ his coat when he walked into the warm room.A.took awayB.took offC.took downD.took out 查看答案
题型:问答题 简答题 人在呼气时,肋骨间的肌肉和隔肌的活动状况、肺内的气体压力变化依次是( )①肋骨间的肌肉和膈肌收缩②肋骨间的肌肉和膈肌舒张③肺内的气体压力增大④肺内的气体压力减小.A.①③B.②③C.①④D.②④ 查看答案