What does the woman Want the man to do
A. She wants the man to listen to the instructions and observe.
B. She wants the man to watch white she performs the operations.
C. She wants the man to ask questions so that she can help him.
D. She wants the man to try to do it while she gives him instructions.
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硝酸甘油的不良反应主要由下列何项所致
A. 心输出量减少
B. 消化道刺激
C. 肝功能损害
D. 血管舒张
E. 低血钾
若曲线y=x2+ax+b和2y=-1+xy3在点(1，-1)处相切，其中a，b是常数，则______．
A. a=0，b=-2
B. a=1，b=-3
C. a=-3，b=1
D. a=-1，b=-1
关于利多卡因药理作用的描述，下述哪一项是错误的
A. 明显阻滞钠通道
B. 促进钾外流
C. 缩短复极过程
D. 缩短浦肯野纤维及心室肌的APD和ERP，且缩短APD更为显著
E. 降低浦肯野纤维的自律性
How does the man feel about the woman's decision
A. Patient.
B. Surprised.
C. Worried.
D. Irritate
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