-- What is the price of petrol these days?
--- Oh, it sharply since last month.
A. is raised
B. has risen
C. has raised
D. is increased
网友回答
A. is raised
(答案→)B. has risen
C. has raised
D. is increased
解析：考查时态及语态，句意：这些天汽油的价格怎么样？噢，自从上个月已经迅速上涨了。根据语境，动作是从上个月持续到现在，所以用完成时态，可排除A和D，raise为及物动词，后面需要加宾语，所以选B。