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V1
某教授說，人們現在對於animal language的研究已經很牛逼啦。我們已經知道53種語言啦。No animal language is discrete infinity language. Therefore, no animal language is natural language.
以下哪個選項必須作爲assumption支持以上結論?
Lz選 Every natural language is discrete infinity langrage. (這題好奇葩，於是完整記下來了。。
考古
V1
科學家在過去的50年中研究了很多的語言。人類的語言都是XXXXX的;而動物的語言[communication system]都不是discrete的，於是得出結論：動物的語言[communication system]都不是native language。問Assumption。
我選的：Native language都是discrete的。
V2
大意是說animals’ language system。作者認爲，“we know that animal systems are not discrete”能夠推出"as a result, animal systems are not natural"。也是考充要條件的。
GMAT邏輯機經:老房子和新房子V1
一個鎮子上的老房子的質量都比新建的房子的質量好，維修次數少，依然堅挺神馬的。於是鎮上的老人家認爲，現在的.房子粗製濫造偷工減料。
以下哪個選項weaken了老人的結論?
Lz選 當年質量不好的老房子現在都塌了 所以你沒看到
考古
V1
有人說現在房子的質量不好了，原來的房子好。問一個解釋/加強
參考：質量不好的老房子隨年代已經坍塌
V2
某年代的老房子普遍比現在的房子質量好，因此推斷出那時候的建築工更厲害。問：削弱
V3
說一個人發現建的早的房子比新造的房子堅固，所以以前的人的造房子工藝比較好。削弱題。狗主選項：選D，建造的早但是不堅固的都已經倒了
原文邏輯鏈：(確認和OG12上面114題十分相似)老房子質量好推出當時的建築工更厲害
變體：選項是反着說的 就是 質量不好的都倒拉拆掉了之類的
OG中類似題
OG12-CR-114.
Guidebook writer: I have visited hotels throughout the country and have noticed that in those built before 1930 the quality of the original carpentry work is generally superior to that in hotels built afterward. Clearly carpenters working on hotels before 1930 typically worked with more skill, care, and effort than carpenters who have worked on hotels built subsequently.
Which of the following, if true, most seriously weakens the guidebook writer’s argument?
(A) The quality of original carpentry in hotels is generally far superior to the quality of original carpentry in other structures, such as houses and stores.
(B) Hotels built since 1930 can generally accommodate more guests than those built before 1930.
(C) The materials available to carpenters working before 1930 were not significantly different in quality from the materials available to carpenters working after 1930.
(D) The better the quality of original carpentry in a building, the less likely that building is to fall into disuse and be demolished.
(E) The average length of apprenticeship for carpenters has declined significantly since 1930.
The correct answer is D.
