GWD-28-19，来把，说出你的看法

heshaohua666

这说明了the iron compounds是那种生物的排泄物

不会是笨蛋科学家拉的吧

heshaohua666

这个太搞了，联想超级丰富！谢谢你，笑了我半个小时！

hedge

开了玩笑后，再看：

生物P与铁共同大量出现，有些地方很多铁却没有P.科学家说铁少P就不繁殖。实验中注入铁，同样没有P

 

找削弱科学家观点的选项

 

E.   P繁荣的地方自然而然地铁就多了（基本上就是先有P再有铁的意思，而不是科学家“铁少P就不繁殖”的观点。估计这个就是排泄，否则无法解释这一GMAT逻辑）

[此贴子已经被作者于2006-12-13 12:32:28编辑过]

boochxu

Fact 1: Plankton thrive in areas with nitrogen.

Fact 2: Few plankton thrive in areas with nitrogen, but with low iron

Fact 3( of the experiment): release of iron, but plankton do not thrive at the same time

oceanographers推理链:
            Shortage of iron
            ðð Plankton not thrive.

D选项推理过程：Ocean currents washed the ironà shortage of ironà Plankton are not thrive

  问题相当于支持oceanographers,D为答案.

tonyyuan

Lawyer的解释很好呀！赞！

vivian_chi

HEDGE解释的非常清楚，刚开始看这题就一直绕在iron和ni的关系上。后来一再看题，才发现非常鬼的gmac在问题上也作了手脚，实际上题目是要支持海洋学家的观点，因此只要建立iron和plankton的关系就可以了。相当恶心的题目啊~~

JimmyYeh

Plankton generally thrive in areas of the ocean with sufficient concentrations of certain nitrogen compounds near the surface, where plankton live.  Nevertheless, some areas, though rich in these nitrogen compounds, have few plankton.  These areas have particularly low concentrations of iron, and oceanographers hypothesize that this shortage of iron prevents plankton from thriving.  However, an experimental release of iron compounds into one such area failed to produce a thriving plankton population, even though local iron concentrations increased immediately.

Which of the following, if true, argues most strongly against concluding, on the basis of the information above, that the oceanographers’ hypothesis is false?

重點是要看懂再問啥，橘色部分為concluding, 橘色部分是說，實驗顯示灑鐵下去，鐵含量馬上增加，但是海藻還是不會生長，等於是反駁oceanographers，因為oceanographers認為是缺鐵會防止海藻生長。
        題目是問argues most strongly against concluding，所以等於是要支持oceanographers。

簡單的說，題目出現舉例或者做實驗，就必須馬上想到實驗與真實情況會否相同？

這題就算看不懂，看到做實驗，也理當猜Ｄ。表示真實海洋的情況與實驗不同，真實海洋會把鐵沖散。所以間接支持oceanographers。
            Correct!