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【简答题】
用排列数表示18×17×16×…×9×8=______．
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反馈参考答案：
举一反三
【简答题】市场失灵的原因是？
【简答题】市场失灵的原因是什么
【单选题】_______his address, I couldn’t possibly pay a visit to him.
A.
Not knowing
B.
Being Known
C.
Known
D.
Having known
【单选题】— Shall I pick up your shopping for you? — Oh, I couldn’t possibly trouble you. — It’s all right. I _________ past the shop anyway.
A.
will go
B.
will be going
C.
was going
D.
goes
【简答题】__________ 用于设置表单边框的样式。
【单选题】I couldn’t possibly ________ on $300 a month with everything so expensive.
A.
get through
B.
go through
C.
go by
D.
get by
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