With the open-access publishing model, the author of a paper is required to
A．cover the cost of its publication.
B．subscribe to the journal publishing it.
C．allow other online journals to use it freely.
D．complete the peer-review before submission.
正确答案：A
从文中“thereisopen-accesspublishingtypicallysupportedbyaskingtheauthortopayforthepapertobepublish”可知答案为A
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