问题补充:
---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
答案:
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。