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    (10分)已知實(shí)數(shù)滿足
    求（1）的最大值。
    （2）的最小值。
    

			
    
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    (10分)據(jù)報道：2011年12月31日深圳寶安沙井39歲患者陳某某，被診斷為人感染高致病性禽流感（H5N1）而引發(fā)的多臟器衰竭而死亡。禽流感再一次又引起了人們的高度關(guān)注。右圖是高致病性禽流感病毒H5N1侵入人體后發(fā)生免疫反應(yīng)的圖解，圖中A、B、C為有關(guān)的物質(zhì)或結(jié)構(gòu)。請據(jù)圖回答問題：

    （1）物質(zhì)B的化學(xué)本質(zhì)是 ______________。
    （2）物質(zhì)A為____________，是由效應(yīng)T細(xì)胞分泌，又能誘導(dǎo)生成更多的效應(yīng)_________ 細(xì)胞，這是一種____________調(diào)節(jié)機(jī)制。  
    （3）效應(yīng)T細(xì)胞與靶細(xì)胞密切接觸，激活靶細(xì)胞內(nèi)的_____________，并使其通透性、滲透壓發(fā)生改變，最終___________，釋放出病毒與抗體結(jié)合，使病毒失去_________________________宿主細(xì)胞的能力。
    （4）T細(xì)胞由__________分化而來,成熟于______________，并隨血液和淋巴在體內(nèi)流動。T細(xì)胞在人體免疫應(yīng)答中除具有圖示增殖分化的功能外，還能 ______________。
    

			
    
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    10% Off
    Show this voucher（優(yōu)惠券）at the Book Store to   get a 10% discount(減價) on any books you buy. We have   lots of books to choose from, including children’s books, novels, travel   guides and hobbies. You’re sure to find something that you will enjoy.
    Assistant Wanted 
    For a busy restaurant work on weekends.   All meals are free. Call at 4323577 for more information.
    Lost Cat
    Help me find my pet cat! She is   4 years old. She has long white hair and a long tail. Her name is Cathy. Call   Carrie at 2853527.
    【小題1】If Mary wants to be an assistant, she can phone the number______.
    A．2853527B．4323577 C．4332577D．2835527
    【小題2】You can get a 10% discount on any books if you ____at the Book Store.
    A．show this voucherB．buy some tickets C．buy some giftsD．buy some books
    【小題3】There are several kinds of books on sale except______.
    A．children’s booksB．travel guides C．magazinesD．novels
    【小題4】______lost the white cat.
    A．CathyB．The assistant C．CarrieD．Mary
    【小題5】The assistant has lunch at the restaurant, she should______. 
    A．call 2853527B．call 4323577 C．work on MondayD．pay nothing
    

			
    
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    10% Off
    
  
    Show this voucher（優(yōu)惠券）at the Book Store to get
  a 10% discount(減價)
  on any books you buy. We have lots of books to choose from, including
  children’s books,
  novels, travel guides and hobbies. You’re sure to find something that you will enjoy.
    
      		
 
    
 
    
  
  
    Assistant Wanted 
    
  
    For a busy restaurant work on weekends.
  All meals are free. Call at 4323577 for more information.
    
      		
 
    
 
    
  
  
    Lost Cat
    
  
    Help me find my pet cat! She is 4 years
  old. She has long white hair and a long tail. Her name is Cathy. Call Carrie
  at 2853527.
    
      		
 
    

    


    1.If Mary wants to be an assistant, she can
phone the number______.
    


    
 
    
  
  
    A．2853527
    
      		
  
  
    B．4323577 
    
      		
  
  
    C．4332577
    
      		
  
  
    D．2835527
    
      		
 
    

    


    2.You can get a 10% discount on any books
if you ____at the Book Store.
    


    
 
    
  
  
    A．show this voucher
    
      		
  
  
    B．buy some tickets 
    
      		
  
  
    C．buy some gifts
    
      		
  
  
    D．buy some books
    
      		
 
    

    


    3.There are several kinds of books on sale
except______.
    


    
 
    
  
  
    A．children’s books
    
      		
  
  
    B．travel guides 
    
      		
  
  
    C．magazines
    
      		
  
  
    D．novels
    
      		
 
    

    


    4.______lost the white cat.
    


    
 
    
  
  
    A．Cathy
    
      		
  
  
    B．The assistant 
    
      		
  
  
    C．Carrie
    
      		
  
  
    D．Mary
    
      		
 
    

    


    5.The assistant has lunch at the
restaurant, she should______. 
    


    
 
    
  
  
    A．call 2853527
    
      		
  
  
    B．call 4323577 
    
      		
  
  
    C．work on Monday
    
      		
  
  
    D．pay nothing
    
      		
 
    

    


     
    

			
    
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    10 years ago， _________ only one classroom building in our
school. And in 10 years， _________ five classroom buildings in our school.
    


    
 
    
  
  
    A．there will be, there are
    
      		
 
    
 
    
  
  
    B．there was, there will be
    
      		
 
    
 
    
  
  
    C．there will be; there was
    
      		
 
    
 
    
  
  
    D．there was, there are
    
      		
 
    

    


     
    

			
    
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