逻辑问题分析论证句式：
11. The arguer employs two lines of reasoning to reach this conclusion.
12. To support this claim, the editorial cites statistics indicating that
13. As it stands, this argument suffers from three critical flaws.
14. In this argument, the planning department of an investment firm reaches the conclusion that
15. The basis for this recommendation is the expectation that
16. While this argument has some merit, there are a few assumptions that deserve attention.
17. The example cited, while suggestive of these trends, is insufficient to warrant their truth because there is no reason to believe that the data drawn fromis representative of
18. To begin with, this argument depends on the assumption that
19. Not only does the arguer fail to, he also fails to
20. However, while the poll establishes a correlation betweenand, and also indicates a correlation, though less significantly, betweenand, it does not establish a general causal relationship between
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