单项选择题
There are three moves in "Create a Research Space" (CARS) Model of Introduction. They are: A. Establishing the territory (establishing importance of the topic, reviewing previous work) B. Identifying a niche (indicating a gap in knowledge) C. Occupying the niche (listing purpose of new research, listing questions, stating value, indicating structure of writing) Decide on which moves the following structures can be used for.
No previous study has investigated X.
The use of X has not been investigated.
There is little published information on …
The role of X remains largely unexamined.
There is very little published research on …
There has been no detailed investigation of …
There has been little quantitative analysis of ...
Data about the efficacy and safety of X are limited.
Up to now, far too little attention has been paid to ...
A search of the literature revealed few studies which …
The impact of X on Y is understudied, particularly for …
So far, however, there has been little discussion about ...
In addition, no research has been found that surveyed ...
Surprisingly, the effects of X have not been closely examined.
Surprisingly, X is seldom studied, and it is unclear to what extent …
In contrast to X, there is much less information about effects of …
X has hitherto received scant attention by scholars of the Y period.
A systematic understanding of how X contributes to Y is still lacking.
A、Establishing the territory (establishing importance of the topic, reviewing previous work)
B、Identifying a niche (indicating a gap in knowledge)
C、Occupying the niche (listing purpose of new research, listing questions, stating value, indicating structure of writing)
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,使用OLS对其进行估计的结果如下所示:
请问:给定
,()是正确的说法
