问题 完形填空

     I stood in the doorway, watching my older brother carefully putting clothes into his bag.I coughed
uneasily. Finally    1    that I was there, Rocky turned toward me with a sad smile.
     "I'm    2    tomorrow," he said.
     "I know." My    3    was almost a whisper (低声). I was    4    at myself for being so weak,but I
wasn't about
to cry.
     "My    5    is early, so there is still    6    time to come to the airport," he said. Seeing the    7    look on
my face, he quickly added, "I promise (答应) I won't leave without saying goodbye."
     I tried to say    8   , but didn't. It's always    9    to keep quiet if you're about to cry. "You promised
you wouldn't cry," he said to me, thinking that I was close to    10   .
     I remember the day he taught me how to ride a bike.    11    I thought he was always right behind me,
holding the seat to keep me from     12   . I was happy with this,but he knew he couldn't hold me up all
my life.He told me that one day he would have to let go.
      His coughing stopped my thinking. What was left to say? How could I say    13    to the person who
taught me everything?
     The next morning I    14   , looked at my alarm clock,and realized he had left    15    ago. We never
even said goodbye.
      Goodbye, Rocky! Although he may have been many miles away, I knew he heard me, even if it was
only an answer in his heart.

( ) 1. A.forgetting
( ) 2. A.arriving 
( ) 3. A.voice    
( ) 4. A.glad    
( ) 5. A.ship    
( ) 6. A.enough   
( ) 7. A.surprised 
( ) 8. A.anything 
( ) 9. A.stranger 
( ) 10. A.tears  
( ) 11. A.At last
( ) 12. A.riding  
( ) 13. A.goodbye 
( ) 14. A.gave up
( ) 15. A.minutes 
B.realizing  
B.living    
B.sound      
B.moved      
B.flight      
B.little      
B.excited  
B.everything
B.better    
B.smiles    
B.From now on 
B.running      
B.hello      
B.stood up    
B.hours    
C.watching    
C.coming       
C.noise     
C.angry       
C.train       
C.no      
C.sad         
C.something   
C.worse        
C.words        
C.At first   
C.walking      
C.yes     
C.looked up 
C.days     

D.learning          
D.leaving            
D.word          
D.pleased             
D.bus             
D.busy               
D.happy         
D.nothing         
D.easier         
D.sadness             
D.So far         
D.falling       
D.sorry           
D.woke up       
D.weeks      

答案

1-5  BDACB    6-10  ACCBA  11-15  CDADB

实验题

如图所示是小明利用透明玻璃板探究“平面镜成像的特点”的情景:竖立的薄透明玻璃板下方放一张白纸,再准备A、B两支大小、外形完全一样的蜡烛,然后把点燃的蜡烛A立在玻璃板前,又把蜡烛B放在玻璃板后面,以A蜡烛为成像物体.

(1)该实验选择两个相同的蜡烛A和B,是为了比较像与物的         关系.

(2)实验时,小明应在_________(填“A”或“B”)侧观察蜡烛A经玻璃板所成的像

(3)将蜡烛B在玻璃板后的纸面上来回移动,发现无法让它与蜡烛A的像完全重合(如图甲).你分析出现这种情况的原因可能是                                   

(4)小明在B蜡烛的上方放一根火柴,火柴      (选填“可能”或“不可能”)被点燃;

(5)图乙是小明同学经过本次实验后,在白纸上记录的像与物对应点的位置.他接着连接了像与物的对应点,发现连线与镜面是垂直的关系,然后又分别测量物与像到平面镜之间的距离,发现距离相等。请问小明同学能否得出像与物关于平面镜对称?

答:       ,理由是:                                                  

(6)若现有3mm和2mm厚的两块玻璃板,则应该选择______mm厚的玻璃板做实验;如果选用另一个,可能出现的情况是                                    .

单项选择题