Mary is the youngest _____ the three girls. [ ]
A. in
B. than
C. of
D. at
答案：C
— You haven't done it well enough.
— But I tried my best and did it in the way________I think is the most convenient. [ ]
A. in which
B. where
C. by which
D. that
历史成本法的重要依据是( )。
A．审慎的会计准则B．匹配原则C．市场价值D．净现值
