合并急性左心衰竭的阵发性室上性心动过速,最佳治疗是()
A.静脉注射维拉帕米
B.Valsalva动作
C.直流电复律
D.置入起搏器
E.射频消融术
参考答案:C
根据语境,将单词补充完整。
1. The girl is a cl_ _er pupil
2. There are many boats on the r_v_r.
3. I will take my k_ _e on Tuesday.
4. What's the w_ _ther like today?
5. Beijing is bi_ _er than Tianjin.
简述教学过程的本质。