gwd7-Q22 to Q25

dreamerps

Q23:

It can be inferred from the passage that a chain of volcanoes created by a mantle plume would most likely be characterized by

              

1. a curved outline
   
2. constituent volcanoes that differ from each other in age
   
3. occurrence near a plate boundary where one plate bends under another
   
4. appearance near many other volcanic chains
   
5. rocks with a wide range of chemical composition

Answer: GWD给出答案 B

请问A为什么不行啊？我一开始没想明白B为什么不行，看NN们一分析B确实没错，但是也无法排除A，因为我开始想地球是圆的，一连串的火山沿着地表那肯定就是curved的了啊，而且又是突出来的，所以也对应了outline。而且又是inferred题...

而且做题的时候马上就想到了高中地理里面的地图，老师老是说什么地壳运动形成的安第斯山脉啊，阿巴拉契亚山脉啊从卫星上拍摄的照片来看就是显著突出来的弧形，所以马上就选了A，CDE好排除，现在搞懂B了，却也放不下A，我是不是想得太远了...让大家见笑了...

还有 When a reservoir is sufficiently large, a sphere

(35)     of this hot rock forces its way up through the upper mantle to Earth’s surface, creating a broad bulge in the

topography.     中间的这个its指代什么啊？指代a sphere吗？怎么翻译啊？

puccamummy

以下是引用valarie在2004-9-20 9:12:00的发言：

25.

Q25:

According to the passage, a hot spot on Earth’s surface is an indication of which of the following?

1. An untapped reservoir of hot rock in the base of the mantle
   
   
2. Volcanic activity at the edge of a plate
   
   
3. Solid mantle rock under tremendous pressure
   
   
4. The occurrence of a phenomenon unique to the Pacific plate
   
   
5. A plume of hot mantle rock originating near Earth’s core

E 中为什么是"originating" but not "originated"?

Why A is not right

to oliveshen: you are right.

originate 不及物动词  “起源，发生”

puccamummy

关于25题：绝对是选E。

Q25:

According to the passage, a hot spot on Earth’s surface is an indication of which of the following?

1. An untapped reservoir of hot rock in the base of the mantle
   
   
2. Volcanic activity at the edge of a plate
   
   
3. Solid mantle rock under tremendous pressure
   
   
4. The occurrence of a phenomenon unique to the Pacific plate
   
   
5. A plume of hot mantle rock originating near Earth’s core

A. An untapped reservoir of hot rock in the base of the mantle 有两处错误。一个是错在状态：说未爆发的，一个是错在位置：说它在地幔底层。文中已经说了，the surface mark of an established plume is a hot spot.

E. 文章第28行提到它的起源在地心，Earth's core。然后接下来说它形成一道地柱（plume)一直通向地面。在这个reservoir没有emptied前的那一刻，地表的那个地方，都将会是a hot spot.

不知道大家同意否？

snowjing

24题支持B.

Because the source of a hot

spot remains fixed while a surface

plate moves over it, over a long period

of time an active plume creates a chain

(50)      of volcanoes or volcanic islands, a

track marking the position of the plume

relative to the moving plate.  The natural

history of the Hawaiian island chain

clearly shows the movement of the Pacific plate over a fixed plume.

例子是服务于结论的. Hawaiian的例子恰好说明"a

track marking the position of the plume

relative to the moving plate. "

zhoujian

24题B是不对的

因为文章里面the Pacific plate moves可以说本身就是一个例子，并不是文章要讨论的内容

sindycindy

谢谢翻译！偶正求呢

誓不低头的重生

Q23:

It can be inferred from the passage that a chain of volcanoes created by a mantle plume would most likely be characterized by

             

1. a curved outline

2. constituent volcanoes that differ from each other in age

同意答案B

答案A为什么错了

 Because the source of a hot spot remains fixed while a surface
                            plate moves over it, over a long period of time an active plume creates a chain of volcanoes or volcanic islands,
                            track marking the position of the plume relative to the moving plate.

 Because the source of a hot spot remains fixed while a surface
                plate moves over it, over a long period of time an active plume creates a chain of volcanoes or volcanic islands,
                track marking the position of the plume relative to the moving plate.

誓不低头的重生

up 

zxzhyzcy

以下是引用醋醋妹妹在2004-7-15 9:32:00的发言：

对于Q23的解答:

假设一平面, 该平面上有一点A. hot spot固定在A点上, 导致A点所在平面突起. 同时该平面以某速度开始移动, A点始终在平面内.(当然相对而言也可理解为平面不动, 而A点在移动).  这样一来, A点所经之处, 形成了由突起点而组成的突起的线条. 由于平面移动的关系, 点与点之间形成的时间是连续和不同的.

解释得已经再精彩和透彻不过了……赞！

lloottuuss

以下是引用zhoujian在2005-12-16 22:51:00的发言：

24题B是不对的

因为文章里面the Pacific plate moves可以说本身就是一个例子，并不是文章要讨论的内容

24题我也选B。

您说得太简单了，我无法赞同。