[求助]请教一道逻辑题

cjmizi

Plankton generally thrive in areas of the ocean with sufficient concentration 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 concentration of iron, and oceanographer 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 basis of the information above, that the oceanographer’s hypothesis is false?

 

A. Not all of the nitrogen compounds that are sometimes found in relatively high concentrations in the oceans are nutrients for plankton.

B. Certain areas of the ocean support an abundance of plankton despite having particularly low concentrations of iron

C. The release of the iron compounds did not increase the supply of nitrogen compounds in the area

D.A few days after the iron compounds were released, ocean currents displaced the iron-rich water from the surface.

E. The iron compounds release into the area occur naturally in areas of the ocean where plankton thrive.

 

A,C 答案排除了
            请教一下解题思路
            为什么是选D？
            疑惑中。。。

哈宁

学者认为IRON对PlanktON来说是必须的.

但一个实验表现出即便放了IRON还是没长出藻.

问?ARGUE oceanographer’s hypothesis is false?那就是说oceanographer’s hypothesis 是对的

那么就是那个实验有问题.

说的对不对?楼下N说

cjmizi

才发现是自己看错了题目。。。

很感谢哈宁同学！！