问题 单项选择题

仪崩低压管网来分配和供给燃气,一般只适用于小城镇的供气,这种燃气管网系统称为()。

A.一级系统

B.二级系统

C.三级系统

D.多级系统

答案

参考答案:A

完形填空
完形填空。
    Once there was a father and a son. They were ill-tempered (坏脾气的) and never gave way to    1  .
    One day the father    2   to ask some friends to dinner in his house. He   3   his son to buy some meat
in town. When the son walked towards the town gate, a man was coming from the outside. The gate wasn't   4   enough to let two men in and out at the same time. But neither of   5   would give way to the other.
They stood straight face to face inside the gate hour after hour. But the father was worried. "What shall I
do? My son hasn't   6   yet. I can't wait any more." He wanted to know what was the   7  with his son. So
he left his friends at home,and went to town   8   his son.
    "You may first take the   9   home for my friends. Let me  10  here against him instead." he said to his
son when he knew what had happened.
( )1. A. one        
( )2. A. decided    
(     )3. A. hoped      
(     )4. A. long       
(     )5. A. their     
(     )6. A. gone       
(     )7. A. wrong      
(     )8. A. to look for
(     )9. A. meat       
(     )10. A. stood     
B. another     
B. decides     
B. told        
B. wide        
B. they        
B. bought      
B. accident    
B. looked for    
B. dinner     
B. stands     
C. other       
C. decide     
C. let        
C. high        
C. them        
C. returned     
C. thing      
C. to find   
C. bread     
C. stand   
D. others      
D. decision    
D. tells     
D. tall         
D. theirs       
D. been        
D. matter                         
D. found      
D. money        
D. standing   
单项选择题