大家来讨论一下这道机经题

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Cuts that need to be held closed in order to heal properly have generally been held closed with stitches. However, pressure to reduce medical costs is mounting. Consequently, it is likely that a newly developed adhesive will become the routine method of holding most types of cuts closed. The new adhesive holds most types of cuts closed as well as stitches do, and the cost of applying it is comparable to that of closing cuts with stitches. But whereas stitches must generally be removed by medical personnel after the cut has healed, the adhesive simply wears off. Thus, for any cut that the adhesive can hold closed as well as stitches can, it is more economical to use the adhesive.
1. In the argument given, the two highlighted portions play which of the following roles?
A. The first is a claim that the argument disputes; the second provides evidence against that disputed claim.
B. The first is a claim that is used as supporting evidence for the main conclusion of the argument; the second is that main conclusion.
C. The first is a claim that is used as supporting evidence for the main conclusion of the argument; the second is a conclusion that is drawn in order to support that main conclusion.
D. The first introduces a practice about which the argument makes a prediction, the second is a conclusion based on that prediction.
E. The first introduces a practice about which the argument makes a prediction; the second is an assessment that is used to support that prediction.

答案是E
为什么第二句不可以被视为conclusion?
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