求助 feifei-59 (解释也看不懂)

59. Top college graduates are having more difficulty demonstrating their superiority to prospective employers than did the top students of twenty years ago when an honors degree was distinction enough. Today’s employers are less impressed with the honors degree. Twenty years ago no more than 10 percent of a given class graduated with honors. Today, however, because of grade inflation, the honors degree goes to more than 50 percent of a graduating class. Therefore, to restore confidence in the degrees they award, colleges must take steps to control grade inflation.

Which one of the following is an assumption that, if true, would support the conclusion in the passage?

(A) Today’s students are not higher achievers than the students of twenty years ago.

(B) Awarding too many honors degrees causes colleges to inflate grades.

(C) Today’s employers rely on honors ranking in making their hiring decisions.

(D) It is not easy for students with low grades to obtain jobs.    

(E) Colleges must make employers aware of the criteria used to determine who receives an honor degree.

答案是A , 不明白为什么，请教详解，谢谢先！

字体太小，看着累得慌，再贴一遍！

59. Top college graduates are having more difficulty demonstrating their superiority to prospective employers than did the top students of twenty years ago when an honors degree was distinction enough. Today’s employers are less impressed with the honors degree. Twenty years ago no more than 10 percent of a given class graduated with honors. Today, however, because of grade inflation, the honors degree goes to more than 50 percent of a graduating class. Therefore, to restore confidence in the degrees they award, colleges must take steps to control grade inflation.

Which one of the following is an assumption that, if true, would support the conclusion in the passage?

(A) Today’s students are not higher achievers than the students of twenty years ago.

(B) Awarding too many honors degrees causes colleges to inflate grades.

(C) Today’s employers rely on honors ranking in making their hiring decisions.

(D) It is not easy for students with low grades to obtain jobs.    

(E) Colleges must make employers aware of the criteria used to determine who receives an honor degree.

honors degree的颁发率由20年前的10%提高到现在50%————》乱给高分导致文凭缩水了，雇主不像以前那么看重honors degree了。所以学校应该控制乱给高分，从而提高文凭的质量。

assumption: 现在的学生并不比以前的厉害。这样就去除了另外的导致高分的可能性

恩，排除它因。解不了题的根源还是在于没读懂原文的line of reasoning，绕进去了，哎。。。

谢谢caterpillarcn的回复.

actually, that's the way i saw it. maybe we are taking too much information into consideration according to our experiences. we have to focus on the restrictive reasoning line.

because of grade inflation, more people now graduate with honors degree. colleges must take action to control the grade inflation. what if something other than grade inflation has led to more honors degree? for example, today's students are higher achievers than the students in the past. then, colleges action targeted on grade inflation will be invalid.