问题
选择题
How long ______ teaching? Forty years.
A．he will have been
B．will have he been
C．will have been he
D．will he have been
答案
答案：D
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How long ______ teaching? Forty years.
A．he will have been
B．will have he been
C．will have been he
D．will he have been
答案：D
| (33)～(34)使用如下三个表： 部门.dbf:部门号C(8)，部门名C(12)，负责人C(6) 职工.dbf:部门号C(8)，职工号C(10)，姓名C(8)，性别C(2)，出生日期D(8) 工资.dbf:职工号C(10)，基本工资N(8.2)，津贴N(8.2)，奖金N(8.2) |
查询每个部门年龄最小者的信息，要求得到的信息包括部门名和最长者的出生日期。正确的命令是( )。
A．SELECT部门名，MIN(出生日期)FROM部门JOIN职工; WHERE部门.部门号=职工.部门号GROUP BY部门名
B．SELECT部门名,MIN(出生日期)FROM部门JOIN职工; ON部门.部门号=职工.部门号GROUP BY部门名
C．SELECT部门名,MAX(出生日期)FROM部门JOIN职工; ON部门.部门号=职工.部门号GROUP BY部门名
D．SELECT部门名,MAX(出生日期)FROM部门JOIN职工;