一个数，它的千位上是最大的一位数，千位上的数字是个位上数字的3倍，其余各位上都是0，这个数是多少？
9003
—We didn’t find Smith attending the lecture.
—No one _______ him about _______ a lecture the following day.
A．told, there to be
B．had told, there to be
C．told, there was
D．had told, there being
前厅部是负责为（）提供前厅服务的综合性部门。
A.宾客
B.员工
C.散客
D.贵宾
