19. Nearly all mail that is correctly addressed arrives at its destination within two business days of being sent. In fact, correctly addressed mail takes longer than this only when it is damaged in transit. Overall, however, most mail arrives three business days or more after being sent.
If the statements above are true, which one of the following must be true?
a) A large proportion of the mail that is correctly addressed is damaged in transit.
b) No incorrectly addressed mail arrives within two business days of being sent.
c) Most mail that arrives within two business days of being sent is correctly addressed.
d) A large proportion of mail is incorrectly addressed.
e) More mail arrives within two business days of being sent than arrives between two business days after being sent.
oncemore：A、B、C的范围太大，而E在原文中根本没提及，所以都错。
D：文章主要讲 most mail arrives three business days or more after being sent
既然超过“地址正确、没有损坏”的时间，则可有良种情况：1）地址正确并损坏的占多数（如你所讲），但有一个前提：地址正确的信必须要占总信的多数；2）地址错误的占多数
《为什么d会对？如果大部分都是地址正确而又在运输时被损坏了的情况，也同样可以得出结论啊。》这样得需要两个条件了。作者: maxwell 时间: 2002-6-28 13:22
其实"Nearly all mail that is correctly addressed arrives at its destination within two business days of being sent. In fact, correctly addressed mail takes longer than this only when it is damaged in transit" 说明了如下问题:1地址正确的信2天内到. 2 只有少数信在过程中被损坏. 后文又说大部分信3天到, 所以说明很多信地址写错了.作者: oncemore 时间: 2002-6-29 19:55
