单项选择题
------- What is the price of petrol these days
-------Oh, it ______ sharply since last month.
A. is raised B.has risen C. has arisen D. is increased
多项选择题 取消险理赔需符合以下哪些条件？（）
单项选择题 It is reported that the police will soon ____ the case of two missingchildren.A. look upon B. lookafter C. look into D. look out
未知题型 下列不属于矿产资源可靠性的内容是( )。
