6人站成一排照相,其中甲,乙,丙三人要站在一起,并且乙,丙要站在甲的两边,则不同的排法种数共有______种.
不同的排法种数有A22A44=48种
股答案为48
在借贷记账法下,账户哪一方登记增加数或减少数,取决于()。
A.账户的格式
B.账户的用途
C.账户的结构
D.账户所反映的经济内容
In many European countries, one has to decide much earlier what one's career is going to be, and there
is less freedom in changing one's decision _____ one has chosen a particular path. [ ]
A. once
B. before
C. until
D. as