Lsat-16-3-3

3. Organization president: The stationery and envelopes used in all of the mailings from our national headquarters are made from recycled paper, and we never put anything but letters in the envelopes. When the envelopes have windows are also made from recycled material. Therefore the envelopes and thus these mailings, are completely recyclable.

Which one of the following is an assumption on which the organization president's argument depends?

(A) All the paper used by the organization for purposes other than mailings is recycled.

(B) The mailing from the organization's national headquarters always use envelopes that have windows.

(C) The envelope windows made from recycled material are recyclable.

(D) The envelopes and stationery used in the organization's mailings are always recycled.

(E) The organization sends mailings only from its national headquarters.

the key is C. i simply don't know wut the gap is :..(

wut's the diff between recycled paper,recycled material and recyclable??

这道题目我开始选得B。我想这个地方有个常识也许是我们没有掌握的，就是“带窗户的信封”的窗户也是由不同的材料制作的。

所以C才需要增加一个假设，说明那个“窗户”也是环保的。

就是这个句话When the envelopes have windows are also made from recycled material.产生了歧义。如果说带windows的信封是环保的，那么假设就应该是：用的信封都是带窗户的即可。

是呀，不然D) The envelopes and stationery used in the organization's mailings are always recycled. 也可以选了嘛

原来是这个区别！！thanx a lot!