搜题请搜索小程序“爱下问搜题”
问题 单项选择题

（）类铁路罐车采用下卸式排油装置。

A、粘油

B、轻油

C、润滑油

D、原油

答案

参考答案：A

完形填空
完形填空。
        I have two new friends.  One is a girl.      1     name is Linda.  She is from     2     .  She is
twelve    3    old.  She is a student    4     Beijing International School.  She is in    5    .  She can
speak    6    and English.  Her parents     7     teachers at a middle school.
       The other is Liu Kun.  He is a Chinese    8    .  He is eleven.  He is in Class One,  too.  He
can speak Chinese well    9    he can't speak English.  His parents are    10      workers.

(     )1. A. He                        
(     )2. A. Ameia                    
(     )3. A. year                      
( )4. A. with                      
(     )5. A. Grade seven,
                Class four
(     )6. A. Englih                    
(     )7. A. is                        
(     )8. A. boy                        
(     )9. A. and                        
(     )10A. factory                  

B. She                    
B. American                
B. years                  
B. on                      
B. Seven Grade,
     Four Class
B. China                  
B. are                    
B. girl                    
B. too                    
B. factories               		C. His                      
C. Chinese                  
C. weeks                    
C. at                      
C. Class Four,
     Grade Seven
C. Chinese                  
C. am                      
C. teacher                  
C. but                      
C. factory's               		D. Her                  
D. English              
D. month                
D. and                  
D. grade seven,
     class four
D. England              
D. be                    
D. manager              
D. at                    
D. factorys              
查看答案
填空题
设0＜k＜1，关于x的一次函数y=kx+
1
k
(1-x)，当1≤x≤2时y的最大值是______．
查看答案