While flying,a bat makes a sound which hits things and comes back to its ears. I

While flying,a bat makes a sound which hits things and comes back to its ears. I

题型:同步题难度:来源:
While flying,a bat makes a sound which hits things and comes back to its ears. In this way it"s able to know         the things are and avoid bumping into them.     [     ]
A. how    
B. where    
C. what    
D. which
答案
B
举一反三
_____Mary is busy, she always helps others.[     ]
A. Although    
B. Since
C. Whether    
D. Unless
题型:同步题难度:| 查看答案
He asks me         to use the computer.   [     ]
A.why      
B.if      
C.whether   
D.what
题型:同步题难度:| 查看答案
I don"t know_________it will rain or not tomorrow.     [     ]
A. how          
B. whether    
C.when        
D. that
题型:同步题难度:| 查看答案
Peter likes readlig a newspaper _____he is having breakfast.   [     ]
A. until    
B. while
C. because    
D. though
题型:同步题难度:| 查看答案
―What can I do for you, sir?
—I really like this shirt. I wonder _________ you have a larger one. [     ]
A. if            
B. what
C. how much    
D. that
题型:同步题难度:| 查看答案
最新试题
热门考点

超级试练试题库

© 2017-2019 超级试练试题库,All Rights Reserved.