The development of China's economy ________ since the 80s of last century.    
[     ]
A. has been accelerating
B. had accelerated
C.is accelerating    
D. accelerated
練習冊系列答案
相關習題

科目：高中英語 來源：同步題 題型：單選題

-You don't have to play that record so loud,do you?
-I'm sony. __ you?
[     ]

A. Has it been bothering
B. Did it bother
C. Will it bother
D. Had it bothered

查看答案和解析>>

科目：高中英語 來源：遼寧省期末題 題型：單選題

She ought to stop work; she has a headache because she _____ all day long.
[     ]
A. has been reading
B. had read
C. is reading
D. read

查看答案和解析>>

科目：高中英語 來源：專項題 題型：單選題

— Did you find the missing couple in the mountain yesterday?
— No, but we ____ to get in touch with them ever since.
[     ]
A. have tried
B. have been trying
C. had tried
D. had been trying

查看答案和解析>>

科目：高中英語 來源：同步題 題型：單選題

— I have got a headache.      
— No wonder. You ______ in front of that computer too  long.    
[     ]
A. work                              
B. are working    
C. have been working          
D. worked

查看答案和解析>>

科目：高中英語 來源：專項題 題型：單選題

You'd better have a rest. You _____ for more than two hours without a break.
[     ]
A. have worked
B. have working
C. have been working
D. have been worked

查看答案和解析>>

科目：高中英語 來源：同步題 題型：單選題

I won't tell the student the answer to the math problem until he____  on it for more than an hour.   
[      ]
A. has been working  
B. will have worked   
C. will have been working    
D. had worked

查看答案和解析>>

科目：高中英語 來源：同步題 題型：單選題

— Where are Jack and Mike?
— They  ____ the furniture you asked for into thehouse.  
[     ]
A. have been carrying          
B. carried    
C. have been carried            
D. were carried

查看答案和解析>>

科目：高中英語 來源：0108 模擬題 題型：單選題

Mr. Smith _____ these days. I think he should take a holiday before he burns out.
[     ]
A. has been overworking
B. overworked
C. had overworked
D. was overworking

查看答案和解析>>

同步練習冊答案