问题 单项选择题

离心沉降法泥沙颗粒分析成果误差检验,要求小于某粒径沙量百分数的不确定度应小于()

A.3

B.4

C.5

D.6

答案

参考答案:C

完形填空
完型填空。
Dear Annie,
     Thank you for your   1   . I'm   2    you like your school.
     I   3   to school from Monday to Friday.   4    have four classes in the morning and two classes in the afternoon.
We have many things to do     5    class.    On Monday and Wednesday afternoon we have sports.    On Tuesday
afternoon some of     6    have a singing class and on Thursday afternoon some have a drawing class. On Friday
afternoon we practise(练习)  7     English. My Chinese friends would like to   8     with me in English. They think I
am like an English   9    . Isn't it great?
     On Saturdays and Sundays I don't go to school. Very often(经常) I go to the parks and have a good time   10   
my family there.
                                                                                                                                                                                      Yours,
                                                                                                                                                                                      Henry
( )1.A.book    
( )2.A.sorry  
( )3.A.go      
( )4.A.We      
( )5.A.after  
( )6.A.them    
( )7.A.saying  
( )8.A.tell    
( )9.A.student
( )10.A.in    
B. pen      
B. fine      
B. like      
B. You      
B. before    
B. you      
B. telling  
B. talk      
B. boy      
B. with      
C. letter    
C. glad      
C. have      
C. They      
C. for      
C. me        
C. speaking  
C. say      
C. girl      
C. of        
D. bike            
D. good            
D. want            
D. Teachers        
D. in              
D. us              
D. listening      
D. have            
D. teacher        
D at              
单项选择题