问题 单项选择题 A1/A2型题

脱落细胞常用的染色法为 ()

A.巴氏染色

B.H-E染色

C.瑞特-姬姆萨染色

D.抗酸染色法

E.瑞特染色

答案

参考答案:A

解析:巴氏染色特点是细胞具有多色性,色彩丰富鲜艳,胞内结构清晰,染色效果好,是细胞病理学检查常用的方法;H-E染色的染色效果也好,只是胞质色彩不丰富;瑞氏-吉姆萨染色适用于血片、淋巴穿刺液和胸腹水涂片。

选择题
完形填空
完型填空。
      As sixth graders, kids were separating into groups, but I wasn't sure where I belonged.
      Our teacher gave us a task called "secret friends" for the coming week.We were supposed to do
nice things   1   our friends without letting them know who was doing it.We could leave   2   notes or
cards either on their desks or in their backpacks.Before doing the task, with our eyes closed, from a
basket, we    3   a name of a classmate who we were to secretly befriened over the next five days.
      Soon, the task was turned into a competition of giving   4   instead of notes.Everyone was getting
cool presents except me.My friend followed the teacher's   5   without a fault.I received nothing but
handmade cards with nice words about me.
      On the last morning, I finally got a package.When I   6   it, the girls around all   7  .It was perfumed powder, an "old lady" gift.My face went red.
      I tried to forget about the   8   gift, but when the same girls   9   it again during the break in the
bathroom, I joined in, "How stupid! My grandmother wouldn't   10   want it." The girls laughed at my 
  11   and left the bathroom.Washing my hands, I let the water run through my fingers   12   I thought
about my words.It wasn't   13   like me to say things like that.
      "I'm your secret friend." It was Rochelle. "I' m sorry about the gift," she whispered to me, tears  
 14  
down her face.
       From a poor family, she was a    15   at school for those with rich parents.Yet she just took all
the    16   and the horrible treatment silently.
      I was sick to my stomach as my    17   words ran through my mind.She had heard everything.
How could I have been so cruel?
      Later I learned she had felt bad all week about not being able to leave me any cool present and her
mum had given up her only luxury(奢侈品).
      And I had    18   everything for her.
      I told her that I had only said those things to try to    19   .
      "We aren't that different from each other, are we?" She smiled    20   .Her simple words, spoken
from her heart, found their way straight into mine.
( )1.A.behind      
( )2.A.outstanding  
( )3.A.pushed      
( )4.A.chances      
( )5.A.directions  
( )6.A.discovered  
( )7.A.laughed      
( )8.A.special  
( )9.A.saw          
( )10.A.even        
( )11.A.feeling    
( )12.A.if          
( )13.A.normally      
( )14.A.dashing      
( )15.A.goal          
( )16.A.teasing      
( )17.A.powerful    
( )18.A.broken      
( )19.A.turn off    
( )20.A.optimistically
B.through    
B.encouraging
B.found      
B.gifts      
B.example    
B.grasped    
B.blamed      
B.embarrassing
B.showed      
B.just        
B.suffering  
B.since      
B.properly    
B.streaming  
B.centre      
B.challenge  
B.tense      
B.changed    
B.fit in      
B.persuasively
C.for    
C.reminding
C.drew    
C.help    
C.patterns
C.held    
C.shouted
C.delicious
C.mentioned
C.hardly  
C.remarks
C.because
C.perfectly
C.getting
C.wonder  
C.puzzle  
C.scary    
C.ruined  
C.take off
C.honestly
D.like            
D.frightening    
D.threw          
D.hope            
D.admission      
D.opened          
D.commented      
D.worrying        
D.suggested      
D.only            
D.reactions      
D.as              
D.carefully      
D.smoothing      
D.target        
D.ignoring        
D.hurtful        
D.disturbed      
D.get in          
D.understandingly