24. When the rate of inflation exceeds the rate of return on the most profitable investment available, the difference between those two rates will be the percentage by which, at a minimum, the value of any investment will decline. If in such a circumstance the value of a particular investment declines by more than that percentage, it must be true that________
Which one of the following logically completes the argument?
(A) The rate of inflation has risen.
(B) The investment in question is becoming less profitable.
(C) The investment in question is less profitable than the most profitable investment available.
(D) The rate of return on the most profitable investment available has declined.
(E) There has been a change in which particular investment happens to be the most profitable available. ----------------------- 答案C Hades整理的逻辑题解释中给的解释是: “文中讲,这个pecentage最少也是通涨率超过最赚钱的投资的回报率的部分,如果一个投资的回报率少于最赚钱的回报率,则它的回报率和通涨率之间的差距一定会大于那个PECENTAGE所以跌价的幅度就更大。” 只有这个解释的逆命题正确才能推出答案C(但一个命题的逆命题不一定正确),因此不是令人满意的解释。 我的问题是: 题目说通货膨胀率减去最赚钱的投资的回报率等于任何一项投资最少会有的贬值率(不知有没有曲解)。然后又提出有一项投资的贬值率比刚才的那个贬值率大,问可以推出什么结论。 实在令人费解,望高人指点。
[此贴子已经被作者于2006-10-4 21:56:46编辑过] |