问题 实验题

下图是动、植物细胞结构图,据图分析回答下列问题:

(1)图中B            、C             、D             (填名称)是动、植物细胞共有的结构。

(2)图1中A            、E           和叶绿体是该细胞所特有的。

(3)图1是      细胞,图2是     细胞。

答案

⑴细胞膜   细胞质  细胞核

⑵细胞壁   液泡

⑶植物   动物

题目分析:图中A是细胞壁,B是细胞膜,C是细胞质,D是细胞核,E是液泡,动物细胞的基本结构:细胞膜、细胞质、细胞核,植物细胞与动物细胞的相同点:都有细胞膜、细胞质、细胞核,植物细胞与动物细胞的不同点:植物细胞具有细胞壁、叶绿体和液泡,动物细胞不具有细胞壁、叶绿体、液泡,所以图1是植物细胞,图2是动物细胞。

点评:此题为基础知识题,比较容易,解答此类题的关键是熟记细胞的结构,理解动、植物细胞的异同点。

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     I remember Navy boot camp (海军新兵训练营) like it was yesterday. You can tell a new person in
the camp from someone who is about to__1__ based on their clothes. It was clearly my second day from what I was __2__. I was walking with my  __3__ down a hall and a sailor, who was about to graduate,
__4__us.
     He must have noticed my __5__. It without a doubt said, "I am tired, __6__ and hungry." You can't
__7__when walking in formation (队列), __8__he whispered out of the side of his mouth, "Hang in
there...you can do it."
     I turned to look at his __9__, but all I saw was the back of his head. Every night before I fell asleep, I
repeated those __10__. I would never know that sailor's __11__. However, I knew that the only reason
he knew what I was __12__was because he had been where I was. He had __13__ it and wanted me to know that I could as well. I was very __14__.
     Then it was my __15__. On my graduation day I saw three sailors standing against the wall. They were new and tired, frightened, and hungry. I __16__ over to them and whispered, "Hang in there...you can do
it." Within one second tears filled the eyes of the __17__ and the two boys gave me a million __18__ with their eyes.
     As I walked away I knew that my words would help them __19__ their goal of graduation whenever
they wanted to give up. I hope they passed on the __20__ to another sailor before they graduated and I
know they did.
( )1. A. train    
( )2. A. studying  
( )3. A. guide    
( )4. A. passed    
( )5. A. posture  
( )6. A. surprised
( )7. A. talk      
( )8. A. however  
( )9. A. direction
( )10. A. rules  
( )11. A. name    
( )12. A. seeking  
( )13. A. made    
( )14. A. curious  
( )15. A. habit    
( )16. A. looked  
( )17. A. soldier  
( )18. A. doubts  
( )19. A. look for
( )20. A. achievement
B. work      
B. wearing    
B. friend     
B. greeted    
B. appearance
B. puzzled    
B. run        
B. therefore  
B. face      
B. comments   
B. task      
B. asking    
B. avoided    
B. depressed  
B. turn      
B. got       
B. child      
B. thanks    
B. focus on  
B. enjoyment  
C. battle    
C. carrying  
C. group      
C. stopped    
C. behavior  
C. bored      
C. wave      
C. besides    
C. gesture    
C. words      
C. reaction  
C. feeling    
C. refused   
C. excited    
C. change    
C. took      
C. girl      
C. hopes      
C. build up  
C. amusement  
D. graduate    
D. buying      
D. instructor
D. showed      
D. expression  
D. frightened  
D. fight        
D. finally      
D. clothes      
D. warnings    
D. purpose      
D. doing        
D. owned        
D. grateful    
D. story        
D. walked      
D. sailor      
D. regrets      
D. pick out    
D. encouragement
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