副交感神经的作用是
A．瞳孔扩大
B．糖原分解增加
C．逼尿肌收缩
D．骨骼肌血管舒张
E．消化道括约肌收缩
参考答案：C
I'm surprised ____ that Sue and Paul have broken up, for they seemed very happy together when
I last saw them. [ ]
A. to hear
B. hearing
C. to be heard
D. being heard
靶心率(THR)是指
A．按年龄计算的最高心率B．与运动中绝不能超过的最高强度相当的心率C．亚极量负荷时的心率D．与运动应该达到的适宜强度相当的心率E．运动终止后5min时的心率
