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问题 解答题

将抛物线y=x2+4x+5化为y=a（x-h）2+k的形式，并指出它的顶点坐标．

答案

y=x2+4x+4+1（1分）

=（x+2）2+1（3分）

∴y=x2+4x+5的顶点坐标为（-2，1）．（5分）

单项选择题

骨软骨瘤作切除的范围是()

A．骨段切除

B．纤维膜，软骨帽

C．纤维膜，软骨帽，病骨，基底周围部分正常骨和骨膜

D．纤维膜，软骨帽，病骨

E．切除肿瘤，搔刮邻近髓腔
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完形填空
完形填空。
Dear Cindy,
     My name is Benny Hu. I am 13 years old. I live in Beijing. My    1    are listening to music and playing
computer games. I also like playing football.
     You are    2    favourite star. I like your songs very much. I think you act and    3    very well. I hope
to become a famous person    4    you and travel around the world. I like you    5    you are a very generous
person－you always give money to the    6    and homeless people around the world. You are also very
smart and you    7    a lot about the world around you.
     I    8    you in Hong Kong last year. I like your big smiling eyes.
     I would be very happy if you could    9    me a photo with your signature.
     Thank you for   10   the time to read my letter. 
     Benny Hu
( ) 1. A. hobbies
(     ) 2. A. I      
(     ) 3. A. sing   
(     ) 4. A. as     
(     ) 5. A. and    
(     ) 6. A. young  
(     ) 7. A. ask    
(     ) 8. A. see    
(     ) 9. A. send     
(     ) 10. A. take    		B. friends   
B. me        
B. sings     
B. with      
B. because   
B. rich      
B. know     
B. seeing    
B. pass         
B. taking   		C. lessons   
C. my            
C. singing    
C. for         
C. so          
C. poor       
C. take         
C. will see    
C. lend         
C. took     		D. secrets     
D. mine               
D. to sing        
D. like            
D. if              
D. happy                         
D. hear               
D. saw               
D. hand             
D. to take    
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