纳税人提供建筑业或者租赁业劳务，采取预收款方式的，其纳税义务发生时间为收到预收款的当天。( )
参考答案：对
中枢性性早熟的治疗目的?
Sometimes I can’t help wondering what’s the matter with Tom．I can’t stand it that he often_____ me and talks with the other students around him．
A．upsets
B．recognizes
C．concerns
D．ignores
