搜题请搜索小程序“爱下问搜题”
问题 单项选择题

David's younger brother is（）engineer

A.a

B.an

C.the

答案

参考答案：B

单项选择题

检索选修课程号为“D3”的学生中成绩最高的学生的学号，正确的、SELECT语句是______

A．SELECT S#
FROM SC
WHERE C#='D3'AND GRADE＞=

(SELECT GRADE FROM SC

WHERE C#='D3')；
B．SELECT S#
FROM SC
WHERE C#='D3'AND GRADE IN

(SELECT GRADE FROM SC

WHERE C#='D3')；
C．SELECT S#
FROM SC
WHERE C#='D3'AND GRADE NOT IN

(SELECT GRADE FROM SC

WHERE C#='D3')；
D．SELECT S#
FROM SC
WHERE C#='D3'AND GRADE＞=ALL

(SELECT GRADE FROM SC

WHERE C#='D3')；
查看答案
多项选择题

产品货架展示的内容有哪些（）。

A.新品

B.优惠

C.优选

D.推荐
查看答案