GWD逻辑一题疑惑。

cambycc

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.

   Answer: d e

题目没读懂，到底什么意思啊？麻烦高手指点一下啦。

ningjun

I only know E is right.

stavan

题目说: 1) 5个SO是在星期四发出的; 2) 星期五发的所有货物都是B; 3) 周末不发货; 4) 发往T的4船货, 其中3船是B

问题: 那个必为真

A.发往T的货物, 至少有一船是SO. 看条件, 无法得出此结论

B.至少有一船SO不是B, 看条件无法得出此结论

C.发往T的货物, 至少有一船不是星期4发的, 无法得出

D.星期五发的货物, 至少有一船是发往T的, 无法得出

E.发往T的货物, 至少有一船是星期五之前发的, 可以得出必为真, 因为星期五发的货物都是B, 而发往T的货物中, 有一船不是B,那么至少这船货物肯定不是星期五发的

答案E

题目就是有点绕, 涉及的概念比较多, 但是都是多重分类, 细心一些就可以了

要注意一些细节,

比如, SO和B的关系没有给定, 可能SO有B, 也可能没有

星期五发的货都是B, 但是不一定说明其他日子发的货物就没有B

别被绕进去就ok了

cambycc

太感谢了！明白了，高手！