皮皮学，免费搜题
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搜题
【简答题】
_______ he worked it out is still a secret.他是如何把它做出来的还是一个秘密
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皮皮学刷刷变学霸
举一反三
【单选题】What trait contributes to the success of crowdfunding campaigns?
A.
The potential benefit to future generations.
B.
Its interaction with prospective donors.
C.
Its originality in addressing financial issue.
D.
The value of the proposed project.