皮皮学，免费搜题
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【单选题】
京东商城属于()电子商务模式A.
B2C
B.
B2B
C.
C2C
D.
G2C
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【简答题】They were shocked on hearing the message.
【简答题】简要回答构成有效发盘必须具备的条件。
【单选题】The girl felt nervous at the stage with a lot of audience _______her.
A.
to stare at
B.
staring at
C.
stare at
D.
stared at
【简答题】构成一项有效发盘必须具备的条件是（ ）。
【单选题】With so many people ______ around her, the girl felt very nervous and grasped her mother’s hand tightly.
A.
standing
B.
having stood
C.
stood
D.
stand