填空题
A—socialist economy B—capitalist economy
C—collective economy D—planned economy
E—controlled economy F—rural economics
G—liberal economy H—mixed economy
I—political economy j—protectionism
K—primary sector L—private sector
M—public sector N—economic channels
O—economic balance P—economic fluctuation
Q—economic depression R—economic stability
S—economic policy T—economic recovery
U—Economic trend V—economic situation