原式=3+1-3-1+4
=4.
_____ soldiers and doctors have been in Wenchuan to help the people there.
A.Thousand of
B.Two thousands
C.Thousands of
D.Many thousands of
因供货单位破产,企业预付账款已不符合其性质,所购货物也无望收回时,企业应借记“管理费用”,贷记“预付账款”科目。 ( )