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Shipping Clerk: The five specially ordered shipments sent out last week were sent out on Thursday. Last week, all of the shipments that were sent out on Friday consisted entirely of building supplies, and the shipping department then closed for the weekend. Four shipments were sent to Truax Construction last week, only three of which consisted of building supplies.

If the shipping clerk's statements are true, which of the following must also be true?

正确答案: E

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急:3-GWD13 中第20题

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发表于 2007-8-2 17:14:00 | 显示全部楼层

急:3-GWD13 中第20题

Q20:

Shipping Clerk:  The five specially ordered shipments sent out last week were sent out on Thursday.  Last week, all of the shipments that were sent out on Friday consisted entirely of building supplies, and the shipping department then closed for the weekend.  Four shipments were sent to Truax Construction last week, only three of which consisted of building supplies.

 

If the shipping clerk’s statements are true, which of the following must also be true?

 

  1. At least one of the shipments sent to Truax Construction last week was specially ordered.
  2. At least one of last week’s specially ordered shipments did not consist of building supplies.
  3. At least one of the shipments sent to Truax Construction was not sent out on Thursday of last week.
  4. At least one of the shipments that were sent out on Friday of last week was sent to Truax Construction.
  5. At least one of the shipments sent to Truax Construction last week was sent out before Friday.

我认为应该选择D,为什么答案是E那

发表于 2007-8-2 19:08:00 | 显示全部楼层
我想這題有陷阱,

第一個條件說,星期四送了五條裝特殊訂單的船出去;
第二個條件說,星期五出去的船,全部都是裝建築材料;
第三的條件說,四條船到了T公司,三條是建築材料船。

第一個條件中,只說星期四有一些特殊訂單船出去,但並沒說有沒有別的船、或建築材料船出去,所以你不能被誤導成星期四只有那些船出去。
而這些條件中,也沒有說只有特殊訂單船和建築材料船,所以不要被誤導成只有兩種船,有可能有別種船。

A.到T公司的至少有一條船是特殊訂單船。(錯,只知道有三條船是建築材料船,剩下一隻不一定是什麼船)
B.至少有一隻特殊訂單船沒裝建築材料。(這個選項否定前提,特殊船和建築材料船混淆了)
C.至少有一隻船不是星期四被送出去的。(不一定,並沒有說星期四有沒有送建築材料船,可能那天也有三隻,和另外一隻船一起到了T公司)
D.至少一隻船是星期五出發到T公司的。(不一定,同C,可能星期四也有送建築材料船)
E.至少有一隻船是星期五之前出發到T公司。(對,因為四隻船裡只有三隻建築材料船,可能是星期五送出去,也可能是星期四有建築材料船出去,就算全部建築材料船都是星期五走,那麼也有一隻船是星期四走的)

我想這一題是在考all的觀念,條件一沒有ALL,而條件二有。


 楼主| 发表于 2007-8-2 22:36:00 | 显示全部楼层
谢谢schlafen^_^
 楼主| 发表于 2007-8-2 22:36:00 | 显示全部楼层
谢谢schlafen^_^
发表于 2020-3-19 20:29:39 | 显示全部楼层
条件1:上周四出的货是5批特殊的货
条件2:上周五出的货都带建筑材料
条件3:出到T的4批货,只有3批带建筑材料

我们不知道周四出的货带不带建筑材料,我们也不知道周四是不是出了非特殊的货

所以,周四可能出了4批非特殊的货,其中1批不带建筑材料,3批带建筑材料。ACD错

也可能,出到T的4批货,3批周五出的,1批周四的非特殊货,5批特殊的货都带建筑材料。B错
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