B.Buy by multiple people to reduce production cost
C.Use rewards as obstacles
D.Alliance business
相关题目
单选The seller reduces the price by a certain percentage of the original price for the buyer, that's to say, the seller does proper favor in price for the buyer. The favor is called ______.
A.commissionB.discountC.advance paymentD.deposit
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单选I am interested in your product. It is said that your new-tech products sell good.