新东方逻辑教程309题，请指教！

cher6068

309、Of those people who became teachers in 1968 and who later left the profession, 30 percent today earn salaries above $35,000 a year；of those who became teachers in 1968 and have remained in the profession, only 15 percent today earn salaries above $35,000 a year. These figures indicate how underpaid teachers are today.

The argument above depends on which of the following assumptions about the persons for whom statistics are cited?

(A) At least one-third of the group of persons who have remained in teaching whould today be earning more than $35,000 a year if they had left teaching.

(B) The group of persons who left teaching and the group who did not are comparable in terms of factors that determine how much people outside the teaching profession are paid.

......

正确答案是B，我觉得A也对啊，正是因为现在仍是教师的这些人工资高于￥35，000的人数不足1/3，作者才能得到他的结论啊。是不是“more than”错了？

请NN们指教。

（由于是手工敲入的，所以其它选项没有全部输完，请原谅。）

ethyl

II－13 http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=71081

      　http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=65429

cher6068

多谢ethyl版主提供的链接。因为我没做逻辑大全，不知CD上是否有新东方逻辑绿皮书的题号和逻辑大全的题号的对照表，我还有几个绿皮书上的问题，如果有对照表下回就不用麻烦版主逐一帖出来。了。