搜题请搜索小程序“爱下问搜题”
问题 选择题

下列说法不正确的是（　　）

A．噪声是由物体振动产生的

B．验电器是检验物体是否带电的仪器

C．大铁块的密度一定比小铁块的密度大

D．固体、液体很难被压缩，原因是分子间有斥力

答案

A、正确，噪声也是声音，所以也是由物体振动产生的；

B、正确，验电器能够检验物体是否带电；

C、错误，大铁块的密度与小铁块的密度相同；

D、正确，固体、液体很难被压缩，就是因为分子间有斥力；

故选C．

完形填空
完形填空。
     __1___ the United States, parents often give a __2___  the name of __3___  father, mother or another __4__member. Some people just choose a name that's __5__  at that time. Two hundred years ago, 50% of __6__ babies in England were named William, John or Thomas, and 50% of __7__ babies were named Elizabeth,   Mary or Anne.  Some of these names are still popular, but ____8___ names are popular,  too. Today, parents sometimes give their babies the name of __9__ athletes(运动员), film __10__, characters from literature or TV shows.
( )1. A. In    
( )2. A. girl  
( )3. A. it    
( )4. A. home  
( )5. A. bad  
( )6. A. girl  
( )7. A. girl  
( )8. A. other
( )9. A. famous
( )10.A. star  		B. On    
B. boy    
B. it's  
B. house  
B. boring
B. boy    
B. boy    
B. others
B. sad    
B. stars  		C. At      
C. baby    
C. its    
C. family  
C. funny    
C. boy's  
C. boy's  
C. the other
C. boring  
C. people   		D. Of        
D. babies    
D. its'    
D. family's  
D. popular    
D. boys'    
D. girl's  
D. another    
D. comedy    
D. man        
查看答案
单项选择题

安全生产国家监察的种类一般分为( )监察和( )监察。

A．一般；专门

B．日常；重点

C．日常；后续

D．现场；后续
查看答案