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No discount will be granted（） you could place an order of more than 5 000 bags.

No discount will be granted（） you could place an order of more than 5 000 bags.
A、until
B、unless
C、otherwise
D、or
正确答案：B

上一条：We have（） the Letter of Credit with the Bank of Japan， Tokyo， in your favour to the extent of USD 10 000.

下一条：There is no direct steamer from here to your port， so we suggest that you（）transshipment at Singapore.