[讨论]一道较难的题，请尝试在2min内作完

selinamba

我选Ｂ，快公布答案吧?

buffonjuventus

我选的也是D，大陆向西，划过那个stationary的东西，不管是什么，既然划过，肯定这个trail的西边比较老，东边的比较新和活跃。请指正。

wuyw2010

我觉得这题没完全读懂题目没关系，不要放弃，先看选项
A. largest B. most violent 跟题目theory描述的关于动态形成过程（time）无关
C. evenly体现不出time
E.longer 此time非彼time
D.newest正解

抓住关键词，可以不弄清楚到底westward导致trail westward还是eastward
PS：这题讨论七年半了还在讨论。。。厉害

Many geologists theorize that the trail of volcanic craters and cinder cones along the Snake River plain of southern Idaho was produced as the North American continent slid westward over a stationary “plume”, a vertical channel through which molten rock rose intermittently from the Earth’s core to burst through its curst.

Which of the following, if true, tends to support the geologists’ theory of how the trail was produced?

(A) The largest craters and cinder cones are on the eastern margin of the trail.
(B) The most violent volcanic activity apparently occurred at the western margin of the trail.
(C) The craters and cinder cones are evenly spaced throughout the extent of the trail.
(D) The newest craters and cinder cones are on the eastern margin of the trail.
(E) The craters and cinder cones on the western margin of the trail generally took longer to form than did those on the eastern margin.

我先不写答案，没作过这道题的xdjm可以测试一下自己的判断（2min limit）
请作过这道题的xdjm也不要急着公布答案，可以尝试以下讨论其逻辑结构。

[此贴子已经被作者于2003-4-21 2:58:59编辑过]

-- by 会员 anchoret (2003/4/21 2:56:00)

BreezyCipher

Many geologists theorize that the trail of volcanic craters and cinder cones along the Snake River plain
of southern Idaho was produced as the North Americancontinent slid westward over a stationary “plume”, a vertical channel through which molten rock rose intermittently from the Earth’s core to burst through its crust.读出这个来就够了啊。
选一个例子支持原因找对了。
D

bdsjb116

稍微用中文翻译了下就顿悟了

知寻

1‘51 D

wudiyeah

两分钟内，选了D

月照琳琅

陈向东GMAT逻辑讲解里面在SUPPORT中有这道题目，感觉第一次看很混乱，第二次果然看出要拎清楚关键词

Jimmyzhang2012

选D吧 其实我也没有完全读懂
但是是这么"猜"的：

读了两遍提干，再略看了下AB发现都有方向，体会到题干强调方向性: "westward" 是关键词

然后看选项
(A) The largest craters and cinder cones are on the eastern margin of the trail.
大小不构成判断因素

(B) The most violent volcanic activity apparently occurred at the western margin of the trail.
频率不构成判断因素

(C) The craters and cinder cones are evenly spaced throughout the extent of the trail.
evenly spaced 就排除了方向性 肯定不对

(D) The newest craters and cinder cones are on the eastern margin of the trail.
把地球表层理解为一个盖子，向一边移动，那最新的肯定在另一边出现: 注意到这里我都不知道是西边先出现还是东边先出现 但是我可以肯定的是时间构成了判定假设的因素，所以D至少不能排除，保留先

(E) The craters and cinder cones on the western margin of the trail generally took longer to form than did those on the eastern margin.
E也谈到了时间长短 再回看D 仔细体会了方向 向西移动，西边的应该较新所以E搞反了
综合以上选D

johnwolf

虽然我单词量很有限，但是猜想最后一句的意思是说石头是由核心喷发出来的，所以“移动”直接形成了西侧，岩浆形成了东侧，西侧肯定比东侧快，D正确
而且DE是刚好相反的意思，没必要看别的选项了