新prep 77

queenie924

77.   
Citizensof Parktown are worried by the increased frequency of serious crimes committedby local teenagers.  In response, thecity government has instituted a series of measures designed to keep teenagersat home in the late evening.  Even if themeasures succeed in keeping teenagers at home, however, they are unlikely toaffect the problem that concerns citizens, since most crimes committed by localteenagers take place between 3 p.m. and 6 p.m.
Whichof the following, if true, most substantially weakens the argument?
A.Similar measures adopted in other places have failed to reduce the number ofteenagers on the streets in the late evening.
B.The crimes committed by teenagers in the afternoon are mostly small thefts andinconsequential vandalism.
C.Teenagers are much less likely to commit serious crimes when they are at homethan when they are not at home.
D.Any decrease in the need for police patrols in the late evening would not meanthat there could be more intensive patrolling in the afternoon.
E.The schools in Parktown have introduced a number of after-school programs thatwill be available to teenagers until 6 p.m. on weekday afternoons.
答案是B，我理解了，但是为什么C不对呢。我排除不了啊~

rudder86

b比c 更好

不是排除，是比较

queenie924

可以详细说说嘛？谢谢

aobailing

原文说的是：即使年轻人晚上呆在家里的时间多了，但因为年轻人主要在下午3-6点犯罪，所以政府的措施无法降低严重犯罪率。

所以原文想表达的是：因为年轻人主要在下午犯罪，所以措施无效。

因此，我们需要找一个选项表明，即使年轻人在下午犯罪，措施仍旧有效（降低严重犯罪率）

所以即使如C所说，年轻人呆在家里比不呆在家里更不容易犯罪，但如果他们在下午犯的罪主要是严重的犯罪，则无法削弱原文结论。

queenie924

谢谢楼上