justyle says
13 years ago
Opportunity cost:選擇某項行為時,必定要放棄某些事物,其中價值最高者為之
latest #6
爆米花🌈炸肉圓ONLY says
13 years ago
機會成本?
justyle says
13 years ago
是阿
☆↖文↘☆ says
13 years ago
zz
立即下載
林阿寬 says
13 years ago
ZZ
723 says
13 years ago
(woot)
爆米花🌈炸肉圓ONLY says
13 years ago
我今天上了供需法則，好複雜
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