---How much is the petrolper liter today?
---Oh, 6.00 yuan. It sharply since last month.
A. is raised
B. has arisen
C. has risen
D. is aroused
网友回答
A. is raised
B. has arisen
(答案→)C. has risen
D. is aroused
解析：考查词义即时态。根据时间状语since last month，句子要用现在完成时态，排除A，D; rise上升，上涨；arise产生，出现。句子应是指价格上涨很快，所以选C。