一个国外的GMAT 论坛。 里面好像有新题

一个国外的GMAT 论坛。 里面好像有新题 www.beatthegmat.com

In recent years, unions have begun to include in their demands at the
collective bargaining table requests for contract provisions which
give labor an active voice in determining the goals of a corporation.
Although it cannot be denied that labor leaders are highly skilled
administrators, it must be recognized that their primary loyalty is
and must remain to their membership, not to the corporation. Thus,
labor participation in corporate management decisions makes about as
much sense as __________.
Which of the following represents the best continuation of the
passage?
A. allowing inmates to make decisions about prison security
B. a senior field officer asking the advice of a junior officer on a
question of tactics
C. a university's asking the opinion of the student body on the
scheduling of courses
D. Chicago's mayor inviting the state legislators for a ride on the
city's subway system
E. the members of a church congregation discussing theology with the
minister

Land Management Specialist:
"Building the Glenn Canyon dam on the Colorado river caused unforeseen
environmental effects. One of these is that, by preventing annual
floods, the dam prevents the river from stirring up sediments
collected on the river bottom and depositing them high on the banks of
the river. The deposited sediments are needed to create and maintain
sandbars, which form natural habitats for native fish. By releasing
water from the dam annually, we will flood the river and thus recreate
the sandbars normally found below the dam."

Which of the following must be true if the prediction of the land
management specialist above is also to prove true?
A. There are no other effects of the dam which will prevent the native
fish of the river from using the new sandbars below the dam.

B. The flood caused by massively releasing water from the dam will be
like a natural flood in every major respect.

C. The size of a sandbar on a river always stays the same or increases
after a flood.

D. Any other dams upriver from the Glen Canyon dam must also release
enough water to cause a flood in order for the flood from the Glen
Canyon dam to be successful. 

E The dam does not prevent the flow of sediments from upriver needed
to replenish the sediments that inevitably wash downstream over time.

Can someone please explain the answers to these questions?

GWD上似乎没有这些题

In 1980, a Danish ten-øre coin minted in 1747 was sold at auction for $8,000. Eleanor Bixby owns another Danish ten-øre coin minted in 1747. When she puts it on the market next week, it will fetch a price over $18,000.

Which of the following, if true, would most weaken the conclusion drawn above?

(A) Since 1980, the average price for rare coins has increased by over 150 percent.
(B) There are only four coins like the one in question in the entire world.
(C) Since 1980, the consumer price index has risen by over 150 percent.
(D) In 1986, a previously unknown cache of one hundred coins just like the one in question was found.
(E) Thirty prominent, wealthy coin collectors are expected to bid for Bixby’s coin.

这个题比较怪，论坛上的答案是D 但是D明显就超出结论范围了。其他的答案也是。请各位解答

第二题选E

第二题有些犹豫，recreate这应该是关键词，必须证明dam不把用来recreate的sediment阻挡住就行了。

第三题D正确，因为当时有同样的钱币被发掘，原来只有两块，现在多了一百块，就不那么值钱了。

1楼，我选A和E

我的思路：

第1题：工会和公司管理层做企业决定的关系就如同囚犯和制定监狱治安条款的微妙关系是同一种pattern. 题目中最关键的一句是 it must be recognized that their primary loyalty is and must remain to their membership, not to the corporation. 也就是说工会和企业的利益是对立的，而工会领导人必须选择对立的2个立场中的一个。

第2题：题目是must be true的题型，也就是“阅读理解”，即根据题干信息顺着理解来选答案，我选E，因为其他选项的结论都不能根据题干中提供信息得出来

4楼，我也选D

我的思路：weaken题，题中的argument是说预测同一种古董COIN现在比1980年时更值钱。选项中ABCE都表明这种预测可能是对的，只有D中情况表明这种coin可能因为1986时市场供给增加了，而需求可能没变，所以价格反而会跌。

my 2 cents, welcome more opinions and discussions. :-)

请问ls第一题中的Although it cannot be denied that labor leaders are highly skilled
administrators如何对应，难道说也要赞美囚犯一下不成吗？

第二题有些想假定题的意思，如果选B，题干怎么会正确，我把sediment都挡住了，如何recreat，in every major respect明显是限定词了，怎么需要must be true

但结论是When she puts it on the market next week, it will fetch a price over $18,000.

D是1980年的next week 很明显超出了范围

第一题我选C  理由： 原文说工会对公司决策的作用。但工会毕竟代表工人利益。选项中的大学就像是公司，学生代表起的作用就像是工会，毕竟代表学生利益

第二题我选E  理由: 原文结论说
                dam不好，理由是dam 一年只能放水一次，造成一次flood, 这样会导致dam 下部sidebar的囤积。而在建dam以前，一年多次的flood，可以将河水的淤泥stir up在岸边囤积。总的说来就是有泥就有sidebar。只是囤积地点不同。选E是用无因无果。如果dam能够滤掉淤泥的话，就不会造成放水时sidebar在底部的囤积。

第三题只能选啦，1980年值8000，现在该值18000，削弱它，找因果推理。根据供需理论，东西多了价格就讲了，所以D解决了这个问题。而且就发掘了100枚，一定程度上稀世了这种硬币的数量，也降低了相对价值。

对不起说错了D 是1986年发现 明显超出条件所给信息的范围