【简答题】二、完形填空(30分) Everybody knows Charlie Chaplin,a world-famous funny actor.People 21have laughed at Charlie Chaplin’s films 22 tears run down their faces.From his very first 23 they know what will happen....
【单选题】设有关系模式:SC(sno,cno,grade),各属性含义依次是学号、课程号、分数。要查询分数低于60分的学生学号,正确的SQL语句是______。 A) SEI,ECT sno FROM SC WH ERE grade BETWEEN O AND 60 B) SELECT sno FROM SC WHERE grade<60 C) SELECT sno FROM SC HAVlNG grade...