题目

A warm thought suddenly _______to me _______I might take the place of the hero to buy some flowers for his mother's 60th birthday. A . came, if B . crossed, when C . occurred, that D . struck, that 答案：C下列物质中不溶于水，但能溶于稀硫酸的是 （A）银         （B）三氧化硫       （C）氧化铁         （D）醋酸