gwd-1-Q9 to Q12 wangyu gg你在吗

windspeaker

以下是引用supermonkey在2005-9-22 22:19:00的发言：

Q11:

According to the passage, human activity has had which of the following effects on salmon populations?

1. An increase in the size of salmon populations in some previously polluted rivers
2. A decline in the number of salmon in some rivers

3. A decrease in the number straying salmon in some rivers
4. A decrease in the gene flow between salmon populations that spawn in polluted streams and populations that spawn in pristine streams

the answer is B. 偶不确定是否是在第一段中的7-9行定位的？哪位NN指点一下啊，谢谢？

 numerical

foxordog

原来如此，解惑解惑，谢谢！

lvqingling

请问：Q12为什么不是D?

D. show how salmons' homing instinct can be impaired as a result of severe environmental degradation of their natal streams.

lvqingling

请问：Q12为什么不是D?

D. show how salmons' homing instinct can be impaired as a result of severe environmental degradation of their natal streams.

lisony

以下是引用晴天小狗在2006-10-20 22:00:00的发言：

12.The author mentions the “aftermath of the Mount Saint Helens eruption” (lines 73-74) most likely in order to

A：indicate the extent to which the disturbance of salmon habitat by human activity in one stream might affect the genetic structure of salmon populations elsewhere

B：provide a standard of comparison against which the impact of human activity on the gene flow among salmon populations should be measured

哪个？？

哪个？？

看原文出现aftermath...MSH。 原文说：Although....,there is no reason to suspect that the effect would be qualitatively different than...MSH.意思是说:没有理由怀疑MSH的后果可以量化-----也就是MSH可以量化，反对以前说不能量化。因此选择B

jingoist2006

以下是引用当当84在2006-8-8 13:36:00的发言：

奇怪，我这里的答案，第9题是E，怎么变成了B,到底是什么？

还有对于e选项

E. describe how environmental degradation can cause changes in salmon populations that extend beyond a numerical   reduction
   

文章前两段都还能解释，那么最后一段哪？我觉得最后一段相当于一个总结段，提出其实人类对鱼的影响和环境的影响是差不多的，那么不就相当于转回来了吗？

谁能帮帮忙？？谢谢

同问，怎么CD上就是没有人对9题进行一下详细的解释呢？我手头的答案显示第9题选E 但严重不理解为什么不选C？

wgaggassi34

以下是引用jingoist2006在2007-10-20 2:03:00的发言：

同问，怎么CD上就是没有人对9题进行一下详细的解释呢？我手头的答案显示第9题选E 但严重不理解为什么不选C？

看整篇文章，对比只在最后一段，不是重点。

大部分篇幅都是描述environmental degradation的！

smilingalone

好强。。崇拜

rorarora

以下是引用jingoist2006在2007-10-20 2:03:00的发言：

同问，怎么CD上就是没有人对9题进行一下详细的解释呢？我手头的答案显示第9题选E 但严重不理解为什么不选C？

C明显是错的，用compare这个词就可以排除，整篇文章一脉相承，都在讲human activity的影响。

但是我对于E还有问题，就是environmental degradation好像不包括后面的disturbance......第二段第一句开头就讲了.....even if...in a pristine region.....

当然别的也没得选，但我对E的说法感到很疑惑

飞天小龙

Q12这一题选B啊？可是我的答案是c么？另外我也不是很理解为什么选c,原文定位应该是这一句吧：Although no one has quantified changes in the rate of straying as a result of the disturbances caused by humans, there is no reaon to suspect that the effect would be qualitatively different than waht was seen in the aftermath of the Mount Saint Helens eruption. 对于这个句子问什么different 后面会用than?这句句子是说人类活动对salmon gene flow的影响是和那个火山是差不多的吧？那为什么会得出c选项的答案呢