单项选择题

( )是验证假说、论证问题、形成科学理论所需要的科学事实,是研究工作所要完成的重要内容。

A.选题依据
B.研究对象
C.研究方法
D.研究资料
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单项选择题

Which of the following is NOT the contribution of this paper?

A.This paper assessed the relationship between narrativity and journal identity, abstract length and number of authors.
B.This paper derived six elements of narrativity from studies on related theory.
C.This paper tested the mechanism of association between narrativity and citation frequency.
D.This paper used six elements to evaluate the degree of narrative in 732 abstracts.