We want to make interesting cakes ________ like animals or trains or_______ .
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We also make the cake _________ by writing your name or a ___________ on it.
We don't need very much to start a business because we can make the cakes _________.
When we need to advertise in schools and have a ____________ with lots of colorful photos.
科斯认为,企业的边界由( )决定。
A. MR=MC
B. 市场均衡
C. 企业外部节约的交易费用=企业内部增加的交易费用
D. 政府税收