问题 名词解释

反刍过程

答案

参考答案:

牛、羊、鹿等偶蹄动物的特殊消化过程,包括已在瘤胃经过初步微生物消化后的食物逆呕回口中重新咀嚼这一过程,可以是由瘤胃直接逆呕上行至口,也可以从瘤胃陆续进入网胃,再由网胃返回口中。经口腔中颊齿的细致咀嚼后再次咽回瘤胃,这一反刍和咀嚼过程可以再次重复进行,直至彻底嚼碎后,食物再从瘤胃经网胃而入瓣胃。

完形填空
完形填空。
      It used to be our custom to take handmade baskets to friends on May Day. We would   1   baskets on a
doorstep, knock on the door, and then run away as fast as our legs could   2   us. It was delightful to peer
(窥视) around a bush and watch our friends open their   3   and pick up the colorful gift,   4   who had left
it out for them.
      I clearly   5   the May Day of the year when I turned ten. That year I was faced with a (an)   6   involving
one of my dearest friends, Pam. We had studied and   7   together nearly every day, but things   8   after a
new family had moved into our small town. Pam was spending more and more time at their house and I felt
   9   and left out.
      When my mother asked me  10  I was going to take a May Day basket to Pam's house, I responded  11 ,
"Absolutely not! I hate Pam." I began to cry. 
      Mom wiped away my  12  and told me that things and people change. She explained that one of the
greatest things friends can do is to give each other a  13  to grow, to change and to develop, and that it's  14 
 for one's friends to spend time with other people.
      I  15  decided to give Pam a basket as a sign of forgiveness, and asked my sister to help me do it. As we
watched from our  16  place, Pam picked up the basket and said loudly enough for us to hear, "Thank you,
Susie, I hoped you wouldn't  17  me!"
      That day, I made a  18  that changed my life: I decided to hold my friends tightly in my heart, but  19  in
my expectations of them, allowing them  20  to grow and to change-with or without me.
( )1. A. hang   
( )2. A. send   
( )3. A. baskets  
( )4. A. asking   
( )5. A. remember   
( )6. A. plan     
( )7. A. lived   
( )8. A. failed   
( )9. A. started  
( )10. A. why       
( )11. A. anxiously 
( )12. A. tears    
( )13. A. reason    
( )14. A. able     
( )15. A. nearly   
( )16. A. covering 
( )17. A. miss     
( )18. A. decision  
( )19. A. deeply   
( )20. A. time      
B. place     
B. transport  
B. eyes       
B. wondering  
B. experience  
B. task       
B. played     
B. finished   
B. hurt      
B. what        
B. weakly     
B. thoughts   
B. means      
B. impossible    
B. hardly    
B. hiding     
B. forget     
B. mistake    
B. shortly   
B. space     
C. throw    
C. carry     
C. arms       
C. mentioning  
C. remind     
C. opportunity 
C. traveled   
C. changed   
C. paid       
C. whether   
C. angrily   
C. unhappiness   
C. chance     
C. acceptable  
C. finally   
C. cheering   
C. disturb   
C. suggestion  
C. highly     
C. sense     
D. give         
D. support      
D. doors        
D. informing    
D. grasp        
D. challenge    
D. discussed    
D. proved       
D. injured      
D. how          
D. happily      
D. freedom      
D. direction    
D. doubtful                     
D. generally    
D. passing      
D. control      
D. difference   
D. loosely      
D. care         
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