在清代康雍乾年间,特别出名的颜色釉瓷器有( )。 A.
铜红釉 B.
三阳开泰 C.
窑变花釉 D.
茶叶末结晶釉 E.
甜白釉

A. 独处
B. 内省
C. 他律
D. 学习

A． the relationship between output and unemployment is erratic and difficult to characterize.
B． when one macroeconomic variable that measures income or spending is falling, other macroeconomic variables that measure income or spending are likely to be rising.
C． recessions do not occur at regular intervals.
D． All of the above are correct.