当颈动脉窦压力感受器的传入冲动增多时,可引起 ( )
A.心迷走神经传出冲动减少B.心交感神经传出冲动增加C.交感缩血管神经传出冲动减少D.心率加快E.动脉血压升高
参考答案:C
乘客对地铁的()、()、()、()等统称为乘客事务。
Bob would have come to the airport to see us off, but he ______. [ ]
A. is ill
B. has been ill
C. was ill
D. will he ill