题目

It is said that he will______ his uncle’s business when he is mature enough to deal with the pubic relations．      A．think over          B．hand over           C．take over D．go over 答案：C 解析: 略下列对物质的分类正确的是（　　）A.硝酸钾、尿素、氨水属于氮肥B.碳酸钠溶液、氢氧化钠溶液、氯化钠溶液都是碱性溶液C.玻璃、铜、海波都属于晶体D.钓鱼竿、船桨、镊子都是费力杠杆