Criminologist: Some legislators advocate mandating a sentence of life in prison for anyone who, having twice served sentences for serious crimes, is subsequently convicted of a third serious crime. These legislators argue that such a policy would reduce crime dramatically, since it would take people with a proven tendency to commit crimes off the streets permanently. What this reasoning overlooks, however, is that people old enough to have served two prison sentences for serious crimes rarely commit more than one subsequent crime. Filling our prisons with such individuals would have exactly the opposite of the desired effect, since it would limit our ability to incarcerate younger criminals, who commit a far greater proportion of serious crimes.
In the argument as a whole, the two boldfaced portions play which of the following roles?
A. The first is a conclusion that the argument as a whole seeks to refute; the second is a claim that has been advanced in support of that conclusion.
B. The first is a conclusion that the argument as a whole seeks to refute; the second is the main conclusion of the argument.
C. The first is the main conclusion of the argument; the second is an objection that has been raised against that conclusion.
D. The first is the main conclusion of the argument; the second is a prediction made on the basis of that conclusion.
E. The first is a generalization about the likely effect of a policy under consideration in the argument; the second points out a group of exceptional cases to which that generalization does not apply.
答案是B,我选了E，其实我一直在B和E之间纠结，最后觉得第二个bold不能算conclusion,所以选了E，请指教了
http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=345973&replyID=&skin=0
每个一轮都会有个conclusion的。如果第二个boldface不算结论，那就没有结论啦~
而且老年人不犯罪也不是exceptional阿~~
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