Discussion about GWD-3-20

辛辛

我的想法如下

?     只有SUPPLY的船 周五

5只            周四

4只回来, 3只有SUPPLY, 1只肯定是周四出去的.

leonchan

B是错误的，原文没说送到TC的包裹是SPECIALLY ORDERED的，因此SPECIALLY ORDERED与building supplies无法建立关系

hotlinda

3-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.

文章中并没有说，shipping department的shipments除了specially ordered shipments就是building supplies shipments,也有可能有其他种类的shipments。所以没法判定TC收到的除了building supplies以外的另一个是SPECIALLY ORDERED了。

2. At least one of last week’s specially ordered shipments did not consist of building supplies.

   文中没有specially ordered shipments与building supplies shipments之间关系的描述，所以B错误

3. At least one of the shipments sent to Truax Construction was not sent out on Thursday of last week.

FLAW: 周四除了送出specially ordered shipments，还可能送出其他种类，其中包括building supplies shipments。所以也有可能送去TC的four shipments都是周四送出的。

4. At least one of the shipments that were sent out on Friday of last week was sent to Truax Construction.

同C，既然可以推得出送去TC的货可以全部在周四进行，同样文中没有提到的周一，周二，周三都符合。

5. At least one of the shipments sent to Truax Construction last week was sent out before Friday.

       周五的shipments只有building supplies，而送去TC的货只有三个是building supplies，说明一定有一个是在周五以外的时间送去

       的。正确

pengfei1102

这道题  是蒙德。 但看了 解释后还是超级晕

irisfang

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.

Thursday:  5 specially order

Friday: all are building supplies

No shipment on Weekends

Truax: 4 ( 3 are building)

Since Friday is the last day and just has building supplies; Truax has no-building supply

We can conclude the no-building supply is sent before Friday

zimerman

谢谢LAWYER!

cold2100

从上面分析来看A和B错，还是有道理的。

wangwei8581

我的想法是这样的，

我开始也觉得ABE是一个意思，但现在看来只有E最严谨。

在送往TC的五个东西里面：

三个是building——〉来源：周一，二，三，四，五（周一到周三也可能送building；周四特别说明，文中说上周的special都是周四送的，只能表明其他四天没有special，不说明周四只有special，周四可能送了五个special，还送了一个building，也可能还有wood）

一个不是building——〉来源：周一，二，三，四（不一定是special，可能是wood，所以周一，二，三也有可能，又因为周四也不只是special，可能也有比如wood，所以周四仍然有可能）

由图可以看出，结论只能说明至少有一个不是周五的。

wangwei8581

我的想法是这样的，

我开始也觉得ABE是一个意思，但现在看来只有E最严谨。

在送往TC的五个东西里面：

三个是building——〉来源：周一，二，三，四，五（周一到周三也可能送building；周四特别说明，文中说上周的special都是周四送的，只能表明其他四天没有special，不说明周四只有special，周四可能送了五个special，还送了一个building，也可能还有wood）

一个不是building——〉来源：周一，二，三，四（不一定是special，可能是wood，所以周一，二，三也有可能，又因为周四也不只是special，可能也有比如wood，所以周四仍然有可能）

由图可以看出，结论只能说明至少有一个不是周五的。

wangwei8581

这种题可以取非来排除，不信试试！