下列哪些手术操作可引起反射性心律失常（）
A.牵拉胆囊
B.压迫眼球
C.颈动脉窦刺激
D.腹腔探查
E.牵拉肠系膜
参考答案：A, B, C, D, E
--- I’m sorry I _____ my homework at home.
--- Don’t forget ________ it to school tomorrow, please.
A．left; to take
B．forget; to take
C．left; to bring
D．forget; to bring
企业分析竞争者需要哪些步骤？
