求助一道CR题啊！！！！！！

nianbohu

High school students who feel that they are not succeeding in school often drop out before graduating and go to work. Last year, however, the high school's dropout rate was significantly lower than the previous year's rate. This is encouraging evidence that the program institute two years ago to improve morale of high student has begun to take effect to reduce dropouts.

which one of following, if true about last year, mostly seriously weaken the argument?


A. there is a recession that caused a high level of unemployment in the city.
B. the morale of students who drop of high school had been low even before they reach the high school.
C. as in preceding year, more high school students reminded in school than drop out.
D.high school established placement offices to assist their graduates in obtaining employment.
E.the antidropout program was primarily aimed at improving student's morale in those high schools with the highest dropout rates.


费费上给出的正确答案是A， 但lz不明白 unemployment 和 high school‘s dropout rates 有什么关系啊，看起来像个无关答案
正确

aaroncheng

前提：学生没信心时，会自己辍学。数据显示，最近辍学比例下降了。
结论：政府提升学生moral的program起作用了。

削弱：最近失业率上升，学生辍学也找不到工做了。
A. There was a recession that caused a high level of unemployment in the city.他因涉入

nianbohu

谢谢，题干没读清楚，often drop out before graduating and go to work题干漏了这一句