Over the past decades, sea ice _______ in the Arctic as a result of global warmi

Over the past decades, sea ice _______ in the Arctic as a result of global warmi

题型:浙江省月考题难度:来源:
Over the past decades, sea ice _______ in the Arctic as a result of global warming. [     ]
A. had decreased    
B. decreased  
C. has been decreasing  
D. is decreasing
答案
C
举一反三
I __________ glasses since I was in primary school and I hate them. They make me look 
like a bookworm. [     ]
A. have worn      
B. have been wearing   
C. have been worn    
D. was wearing
题型:浙江省模拟题难度:| 查看答案
— What"s the price of petrol these days ?   
—  It _______ frequently since last year .  [     ]
A. is arisen    
B.  increased    
C. has been rising  
D. has raised    
题型:浙江省模拟题难度:| 查看答案
They   ____ on this project for l 4 hours, but it’s so difficult to persuade them to have a rest.    [     ]
A. had worked    
B. have been working    
C. worked    
D. are working
题型:河北省模拟题难度:| 查看答案
— Jack, do you know anything about Doctor Brown?
— I ______ to him for years. I don"t see how anyone else could do better. [     ]
A. went
B. will go
C. had gone
D. have been going
题型:北京模拟题难度:| 查看答案
— Have you watched the nine o"clock news?
— No. I ______ my homework at home all the morning.
A. had done
B. have done
C. did
D. have been doing
题型:天津期末题难度:| 查看答案
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