患者,男,75岁。车祸致多发骨折及脾破裂,行脾切除术后5天,卧床制动。今晨突发胸闷气促,伴意识不清。查体:T37.4℃,P105次/分,R25次/分,BP94/58mmHg,SaO290%。引起该患者上述表现最可能的原因是 ( )。
患者,男,75岁。车祸致多发骨折及脾破裂,行脾切除术后5天,卧床制动。今晨突发胸闷气促,伴意识不清。查体:T37.4℃,P105次/分,R25次/分,BP94/58mmHg,SaO290%。引起该患者上述表现最可能的原因是 ( )。
Teachers constantly reflect on what they do as a teacher and how their learners learn as learners. With systematic reflections and research, they improve their teaching and their learners ' learning. Here the teacher is playing the role of a(an)_______.