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.

the answer is e, 题目我看不太懂，谁解释一下？

1. 注意原文"all of the shipments that were sent out on Friday consisted entirely of building supplies",在上周五发出的全是building supplies. 就是说周五没发别的全是building supply.

2. 还有"Four shipments were sent to Truax Construction last week", 上周Four shipments全部发出去了.

1,2加一起可以推出,在发出的东东里面除了shipment supply都是在上周五以前发出的.就是E说的.

thanks,

但是这样的话题目中‘The five specially ordered shipments sent out last week were sent out on Thursday’没有任何用处？