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归纳题一题求解。。。

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楼主
发表于 2011-5-17 22:24:56 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
A package is never accepted for delivery by the delivery service unless it is within the established size limits.All packages accepted for delivery by service have a return address.
If the statements above are true,which of the following must also be true?
A  The delivery service charges more for heavier packages than for lighter packages
B  The delivery service will always accept for delivery a package that is within the established size limits
C  If a package is within the established size limits and has a return address,it will be accepted for delivery by the delivery service no matter how heavy the package is.
D A package that is not within the established size limits but has a return address is never accepted for delivery by the delivery service.
E The delivery service does not charge for packages that must be returned to the sender

答案是D,逻辑理不清楚,请求各位大虾帮忙
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沙发
发表于 2011-5-17 22:37:45 | 只看该作者
先看第一句within the established size limits是accepted for delivery的必要条件,这种句式一定要读书

这道题的关键是掌握必要条件

没有满足within the established size limits,就没有accepted for delivery。
板凳
发表于 2011-5-17 23:37:10 | 只看该作者
must be true 的意思是,根据原文意思一定是对的,A 重的货物比轻的货物收费多。原文推不出来。b物流公司总是接受在规定规格以内的货物,(错,因为如果没有写退回的地址,它也不收)C既符合规格又有地址,多重都接受(错,文中没提及重量的收费)D(不在规格范围内,但有退回地址,不接受)正确,原文中规定尺寸就是接受的必要条件,如果这个不行,肯定不接受。E没有收钱的货物一定退回去。文中没有信息支持
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