【单选题】______ we all know is ______ the old gentleman, for ______ life was hard in the past, still works every day. [ ]
【单选题】_ reports of past events are often more interesting than modern historians' view of them.
【简答题】汽车水箱中,常加入一定量的无水乙醇。问:无水乙醇的作用是什么?用乙二醇代替无水乙醇可以吗?为什么?
【判断题】Reports prepared by managerial accountants have a past orientation.
【单选题】“两不愁、三保障”是衡量贫困户退出的重要指标,其中的两不愁是指不愁吃、不愁穿,下列选项中不属于“三保障”内容的是