曹操受封魏王,举国欢腾,人声鼎沸,八方朝贺,其中乌桓单于第一个来朝。请问乌桓单于是谁?
参考答案:
此人是普富卢。
—How do the shops make money if they sell at such low prices?
—Manufacturers, it seems, are willing to bring down prices _______ big volume purchases.
A.under the name of
B.on behalf of
C.in return for
D.in preparation for
充分就业与物价稳定之间的矛盾体现在菲利普斯曲线所表明的这两者间的交替关系上。