下列程序段执行以后，内存变量y的值是( )。
x=34567
y=0
DO WHILE x＞0
y=x%10+y*10
x=int(x/10)
ENDDO

A) SELECT * FROM 订单 WHERE HEAD(订购单号，1)="P"
B) SELECT * FROM 订单 WHERE LEFT(订购单号，1)="P"
C) SELECT * FROM 订单 WHERE "P" $订购单号
D) SELECT * FROM 订单 WHERE RIGHT(订购单号，1)="P\

A) REPLACE AGE WITH AGE+1
B) UPDATE STUDENT AGE WITH AGE+1
C) UPDATE SET AGE WITH AGE+1
D) UPDATE STUDENT SET AGE=AGE+1