将一洋葱细胞放入大于该细胞细胞液浓度的KNO3溶液中,一段时间后在显微镜下发现该细胞

题型:单项选择题

问题:

将一洋葱细胞放入大于该细胞细胞液浓度的KNO3溶液中,一段时间后在显微镜下发现该细胞未发生质壁分离,其原因可能是该细胞()①是死细胞②大量吸水③是根尖分生区细胞④大量失水⑤质壁分离后又自动复原

A.①②③

B.①③⑤

C.②③⑤

D.②④⑤

考点:高中生物物质进出细胞的方式物质进出细胞的方式题库
题型:单项选择题

肠内营养发生腹胀、腹泻与哪项无关()。

A.输液速度

B.维生素不足

C.溶液温度

D.溶液浓度

E.溶液渗透压

题型:单项选择题

M受体

A.位于骨骼肌神经肌接头的肌膜上
B.位于植物神经节细胞膜上
C.可被酚妥拉明阻断
D.要被儿茶酚胺激活
E.位于植物性神经支配的效应器上

题型:单项选择题
完形填空。
     The D-word, it's most people's worst fear, but, in a bittersweet way, it was my greatest joy. In divorce,
you gain something and you   1   something.
     I'm thirteen years old, and I know what it   2   like when parents split up, because mine did last fall.
     My parents had been   3   for years. When my father started cheating my mom things went downhill, I   4   
they would divorce instantly. I tried to picture my life after my parents   5   up-living at my mom's house during
the week, and my father's house on the weekend. But my mom decided to be the bigger person and try to   6   
it out, so that my siblings and I would know   7   it was like to have a family. Things didn't get better,   8  .
     I would always strain to hear the quiet   9   they didn't want me to hear. They weren't getting along and they
weren't happy,
     My father has never really been there for me. He was there physically but not emotionally. He yelled a lot and
never really showed any  10  in going to my piano recitals or watching my dance performances,  11  we asked
him to do and he had another  12 -a lie. We just ignored it and went on with our lives as if nothing was the
matter. 
     Then last summer, there was real  13  in paradise. My siblings and I want out to Los Angeles to pursue acting
and while we were out there, my father  14  my mom again, and this time my brother, sister, and I all found out.
We decided to stay in L.A and leave my father in Florida.
     Our 15  resulted in divorce. We didn't know if we were making the right  16  or not. My mom went back and forth. She wanted what was best for her children. She asked me if I thought we should go back to Florida or stay
in Los Angeles, I replied mom "There is nothing in Florida for us any more. Out here in L.A, we have so many
  17 , that can come true. We shouldn't let him abuse us any more." Finally, we are free.
     The  18  was the best thing that had ever happened to me and the rest of my family. I now know that taking
chances is the best thing to do. I accept that  19  doesn't always. If, in your heart, you can feel something that is
not right, then follow your heart. In the end it's going to be your only true guide, to have and to hold, for richer
or poorer, your heart will never  20  you down.
( )1.A. lose         
( )2.A. smells       
( )3.A. happy        
( )4.A. hoped        
( )5.A. got          
( )6.A .keep         
( )7.A. how          
( )8.A. though       
( )9.A. talk         
( )10.A. dislike     
( )11.A. Everything  
( )12.A. explanation      
( )13.A. happiness   
( )14.A. cheated     
( )15.A. words       
( )16.A. Judgment   
( )17.A. dreams      
( )18.A. experience  
( )19.A. prejudice   
( )20.A .get         
B. enjoy             
B. feels             
B. satisfied         
B. wished            
B. split             
B. run               
B. that              
B. however           
B. conversation      
B. care             
B. Something        
B. excuse           
B. puzzle           
B. beat             
B. actions          
B. plan             
B. imagination      
B. divorce          
B. preference       
B. set            
C. give           
C. sounds         
C. unhappy        
C. doubted          
C. looked        
C. stick            
C. which           
C. meantime      
C. argurments       
C. concern        
C. Nothing         
C. reason         
C. difficulty     
C. trusted         
C. thoughts      
C. decision        
C. realities      
C. conflict        
C. love           
C. put         
D. own          
D. looks        
D. unsatisfied  
D. thought      
D. stood        
D. speak        
D. what         
D. while        
D. dialogue     
D. interest     
D. All thing    
D. cause          
D. trouble      
D. scolded       
D. ideas        
D. arrangement                
D. wishes      
D. separation    
D. hate         
D. let        
题型:单项选择题

( )是总结报告的精华,必须与研究架构、文献回顾的结构呼应,并注意资料的时间和逻辑。

A.研究问题

B.研究方法

C.研究结论

D.研究意

E.研究发现

题型:单项选择题

精子形态异常包括()、()、()、()。

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