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问题 单项选择题

Ach使窦房结细胞自律性降低是通过

A．膜对K+通透性增大

B．阈电位水平下降

C．If电流增强

D．最大复极电位降低

答案

参考答案：A

解析：
Ach使窦房结细胞自律性降低是通过膜对K+通透性增大。

完形填空
完形填空。
     It is __1__ day of school. Li Ping wants to __2__. He wants to see his friends. He wants to meet his
new teachers.
     He __3__ early in the morning. He washes and eats his breakfast. Then he__4__his bike to school.
     He sees his friends in school. He __5__ them happily. Then the bell rings (铃声响了). Everyone
__6__ the classroom.
     Li Ping meets his new teacher. __7__ is Zhao Ling. She teaches __8__ this term. Li Ping likes Miss
Zhao. He thinks she is a nice teacher.
( )1. A. one            
( )2. A. go to the school
( )3. A. gets up        
( )4. A. has            
( )5. A. plays with      
( )6. A. goes            
( )7. A. His name        
( )8. A. their Chinese  		B. first              
B. go back to the school
B. get up              
B. rides              
B. plays              
B. go to              
B. Her name            
B. their China           		C. the first    
C. go back school
C. goes up      
C. sits          
C. says with    
C. run          
C. He            
C. them Chinese  		D. the one          
D. go back to school
D. go up            
D. ride            
D. talks            
D. runs to          
D. Her              
D. them China      
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单项选择题

尿失禁患者的护理下述不妥的是

A．加强皮肤护理，预防褥疮
B．视病情留置导尿
C．控制饮水，减少尿量
D．用接尿器接尿
E．观察排尿反映
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