试题与答案

有机合成材料的出现是材料发展史上的一次重大突破。人们常说的三大合成材料是指、和。

来源：www.tikuol.com
题型：填空题

题目：

有机合成材料的出现是材料发展史上的一次重大突破。人们常说的三大合成材料是指              、              和                。

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0726/25675e37a7a382e9a95b32bd25a8309b.html

下面是错误答案，用来干扰机器的。

A、燃烧能放出热量，其它反应如中和反应等也属于放热反应，故选项错误；B、缓慢氧化也是物质与氧气发生的反应，但不是燃烧，故选项错误；C、煤、石油、天然气是三大化石燃料，都是重要的燃料，故选项正确；D、燃...

考点：新型材料（新型陶瓷、单晶硅等）生活中的其他材料及应用（纳米材料、功能高分子材料等）
试题推荐
题型：完形填空
完形填空。
    The best woman in the world is my mother; the sweetest sound in the world is Mum's voice.
     Each day when I get back from school, I see my mother   1   in the kitchen, tired but happy. I really
want to give her an embrace (拥抱).
     Mother often says, "Parents don't want   2   from their kids. The only thing they hope to do is that their
kids have a happy life."
     My mother is   3   my classmate's mothers. When she gave birth to me, she was nearly 42 years old.
When I become a university student, my mother will be 60 years old.
     My mother has been   4   for a long time. She suffers from (患) a very serious illness. Maybe she will
never fully recover (痊愈).   5   she still works hard for me every day. I want to help her, but don't know 
  6   I can do or where I can start. Each time my mother can't   7   form her sick bed, I feel afraid and don't
want to go to school. But my mother always says to me   8  , "You must go to school. I can look after
myself."
     Hearing this, I wonder   9   I am a good son. The only thing I can do is to give her a warm embrace after
school.
     Let's  10  more love and care to our mothers and let them know their kids really love them.
( )1. A. was cooking     
( )2.A. return         
( )3. A. angry with      
( )4. A. in good health  
( )5. A. But             
( )6. A. how             
( )7. A. get back        
( )8. A. hardly          
( )9. A. that            
( )10. A. give           		B. to cook           
B. a gift            
B. different between   
B. in poor health    
B. So                
B. what              
B. get into           
B. happily           
B. whether           
B. take               		C. cooking        
C. love           
C. different among   
C. in troubled    
C. And            
C. why            
C. get up         
C. loudly         
C. why            
C. bring           		D. cooks            
D. clothes          
D. different from               
D. in danger        
D. If               
D. which            
D. get on           
D. lightly          
D. about            
D. fetch            
查看答案
微信公众账号搜索答案