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问题 多项选择题

对维生素K缺乏症出血严重的患者，想要快速止血，比较恰当的处理方法是（）

A.用维生素K1快速止血

B.输入新鲜血浆

C.以上均可快速止血

D.口服维生素K1

E.用冷沉淀物静脉滴注

答案

参考答案：B, E

完形填空
完形填空。

       We are in No.10 Middle School. We have many   1   in our school.
       We can't arrive late for school. We have to be in the   2   before the lesson begins. We can't eat food
  in class. If someone is   3  , he can eat food between two lessons. But we can't buy food   4   our
  school. We have to buy it in our school shop. And we can't   5   in class. We have to be quiet.
       In English classes, we have to do some   6  . Our English teacher says it is a good way to   7  
  English. Our Chinese teacher is a tall and heavy man. He is very strict with us. We have to   8   straight
  and listen to him carefully in class. Oh, we can't stand these rules,   9   nobody can break (违反) them.
       After class, we can't run in the hallways. It's  10  sometimes. Oh, we can't talk loudly in the dining
  hall as well.

( ) 1. A. lessons        
( ) 2. A. house          
( ) 3. A. late            
( ) 4. A. outside        
( ) 5. A. do our homework
( ) 6. A. shopping        
( ) 7. A. speak          
( ) 8. A. walk            
( ) 9. A. and            
( )10. A. dangerous       		B. students              
B. classroom            
B. hungry                
B. in                    
B. listen to the teacher
B. swimming              
B. improve              
B. write                
B. or                    
B. exciting              		C. rules          
C. library        
C. busy          
C. behind        
C. wear uniforms  
C. cleaning      
C. discuss        
C. sit            
C. but            
C. difficult      		D. questions    
D. hall          
D. tired        
D. next to      
D. talk loudly  
D. reading      
D. talk          
D. run          
D. if            
D. funny        
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问答题

某小学四年级的李小彤同学是属于那种学习积极性不高、学习成绩相对落后、而平时上课又不太守课堂纪律的后进生，长期以来一直受到同学和教师的歧视，班主任和很多课任老师明确表现出对该同学的放任和漠视，以至于该同学同班主任和课任老师的关系异常紧张。故意顶撞老师，课堂上恶作剧，不良行为习惯的表现等等。直到某一天新换了一位班主任老师，班主任老师从不同的角度在了解李小彤，李小彤也在“观察”着新来的班主任……

请依上述材料，回答以下问题：

后进生一般具有哪些心理特征？
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