I don’t think he will pass the exam,________?[ ]
A.do I
B.don’t I
C.will he
D.won’t he
答案:C
患儿1岁,表情呆滞,眼距宽,眼裂小,鼻梁低平,双眼外侧上斜,通贯手
A.21-三体综合征B.18-三体综合征C.先天性甲状腺功能减低症D.苯丙酮尿症E.粘多糖病
在学生选课表(SC)中,查询选修了3号课程(课程号CH)的学生的学号(XH)及其成绩(GD)。查询结果按分数的降序排列。实现该功能的正确SQL语句是( )。
A. SELECT XH,GD FROM SC: WHERE CH='3F' ORDER BY GD DESC
B.SELECT XH,GD FROM SC; WHERE CH='3'ORDER BY GD ASC
C.SELECT XH,GD FROM SC; WHERECH='3'GROUP BY GD DESC
D.SELECTXH,GDFROMSC; WHERE CH='3'GROUP BY GD ASC