OG-32-198-205总结，8错5，痛定思痛！

cg

以下是引用思谦在2005-7-15 20:10:00的发言：

201.Which of the following statements about discoveries of gold deposits is supported by information in the passage ?

(A)The number of gold discoveries made  annually has increased between the time of the original gold rushes and the present.

(B)New discoveries of gold deposits are likely to be the result of exploration techniques designed to locate buried mineralization.

(C)It is umlikely that newly discovered gold deposits will ever yield as much as did those deposits discovered during the original gold rushes.

(D)Modern exp;orers are divvided onthe question of the utility of simple prospecting methods as a source of new discoveries of gold deposisits.

(E)Models based ont he theory that gold originated from magmatic fluids ave already led to new discoveries of gold deposits.

The best answer is B.

这题为什么选B呀?

试着回答看看

基本上直接推出正确答案，要同OG的解释，要把整篇文章融会贯通

," Although these same methods still lead to an occasional discovery, most [gold] deposits not yet discovered have gone undetected because they are buried and hence no surface expression"(line14-16);

因此可得知用simple prospecting methods(即有实际探查过)只零星发现有surface expression金矿，绝大部分因为埋藏在地层中，难以察觉。

最后一段 ”These models are constructed primarily from empirical observations of known mineral deposits and from theories of ore-forming processes.” high-technology model是根据实际探查过的矿层和theories of ore-forming processes

因此，The explorer uses the models to identify those geological features that are critical to the formation of the mineralization being modeled, and then tries to select areas for exploration that exhibit as many of the critical features as possible.

想挖矿的人会找寻符合model上越多重要特征相同的地点

因此得到 新发现的金矿可能是利用high-technology model发现过去因为埋藏在地层中，难以察觉的矿藏=> (B)

不过 我觉得这样推答案在有时间压力下，加上单字理论很多（对我来说），我想用排他去除其它答案可能会快一点

A)The number of gold discoveries 文章未提及

C) newly discovered gold deposits will ever yield as much as did those deposits discovered文章未提及

D) on the question of the utility of simple prospecting methods 文章没有质疑用simple prospecting methods

E) have already led to new discoveries of gold deposits. 最后一段没有提到已发现，只说可以这么做

因此B的are likely to be 是最符合答案的

希望有帮助

[此贴子已经被作者于2005-8-10 22:44:12编辑过]

思谦

谢谢cg，回答真仔细，终于懂了！

Fat_fish

I still don't quite understand Q205. Why III is correct.

Who can help me?

Fat_fish

UP!

anyone can help me??

supermonkey

以下是引用kevinwww在2004-4-24 15:46:00的发言：

上午做OG－32－198-205 错了5道，痛定思痛，总结如下：

第一段：新旧理论比较；第二段：老方法不再适用；第三段：新技术要求新理论；总结新理论及如何用。

第三段的后半段为重点，看懂可以作出198，200，201，203四题，就是因为没细看这句，做题时狂晕，结果是狂错！ 该半段总结如下：

“使用B可以帮助完成A，要想用上B必须找到C，C又依靠D模型，而D模型来自于E理论；所以E理论很重要！”

即：发现A <- 可以利用B <- 除非找到C <- C依靠D模型 <- D模型来自于E理论（所以E理论重要）

ABCDE分别是：
Find gold <- High-Tech <- Mineralized sites <- Conceptual Models <- Theory of ore-forming processes

faint 在考逻辑啊！看来不能有以前考虑TOEFL阅读的方式去做GMAT题了！再总结：

1. 阅读文章时一定要抓住文章的脉络（知道各段在讲什么及顺承关系），才不至于迷失在读不懂的单词和细节中；文章把握了脉络就可以做题了，碰到细节题在根据脉络回文中查找，比如199问具体的老理论，202问哪种gold更容易发现；

2.读文章时碰到作者逻辑推理的地方可以慢读，出题的可能性大。其他细节可以一带而过，如第三段前半段关于high-tech methods的6行都可以不看，结果也没出题，第一段也只需要知道有新旧两种理论就行了，具体的描述太专业了，很难看懂记住，碰到细节题时再回去查找就是了。

以上总结仅由这一篇文章而来，片面的地方还需通过以后的阅读纠正！

没总结每道题为什么我会选错，错的太多了

对地质和生物的文章比较头痛，第29篇也是狂错，希望多总结几篇此类的文章，能有所进步。

大家都怎么总结的呀？！

偶刚刚做的，做了20分钟，错了6个。。。

supermonkey

顺便请教一下前辈，OG-32这样的文章在GMAT考试中算是难的，还是简单的啊？

waterg

请问205第3个选项，我这么也读不懂句子结构。请哪位给解释一下。感谢！

III. The degree to which the model chosen is based on an accurate description of the events leading to mineralization

to which 从句是到to which the model chosen吗？还原以后变成the model chosen to the degree吗？怎么没有谓语？怎么想也不明白！愁死了！！

fuyun

205题可以首先根据原文

These models are constructed primarily from empirical

observations of known mineral deposits and from theories

35) of ore-forming processes. 把选项中的

II. The degree to which the model chosen relies on empirical observation of known mineral deposits rather than on theories of ore-forming processes 排除掉。

The explorer uses the models to

identify those geological features that are critical to the

formation of the mineralization being modeled, and then

tries to select areas for exploration that exhibit as many of

the critical features as possible.勘探者运用这些模式来鉴定那些正在被仿真的矿物形成非常重要的地理特征，然后尽量选择表现出越多这些重要地理特征的地方进行勘探。

暗示说：选择的地区的地理特征越接近这些模式鉴定出的重要特征，勘探结果越有效；另一方面，勘探效果也受到仿真的矿物产生过程的准确性的影响

It can be inferred from this that the efficiency of the resulting exploration will depend on how closely the features of the selected area match the features identified by the model as critical (Statement I) and on how accurately the process of mineralization has been modeled (Statement III).  

不知道说没说明白。

chyyoung780

好煩的一篇,繼續看到懂為止

rosmarine

关于205的III，wangyu说的预备步骤我理解，就是说model的建立依赖于对地质状况精确的描述，也就是最接近真实的input，然后model才能output出最适合当地的features。但是，这种理解似乎是我们自己的推理吧？文章哪里有说到这个意思呢？