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【单选题】
几种常见的 B2B 电子商务模式中,不包括()A.
基于供应商的模式
B.
基于买方的市场
C.
基于卖方的市场
D.
基于中介的市场
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反馈参考答案：
举一反三
【单选题】He promised to tell me by himself when I ____.
A.
come
B.
would come
C.
came
D.
had come
【单选题】Jerry has promised to keep the secret, so he won’t tell anyone even though .
A.
asking to
B.
to be asked
C.
to ask
D.
asked to
【单选题】He promised to tell me by himself when I ______.
A.
come
B.
would come
C.
come
D.
had come
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