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?
当然会有每个答案都和自己想的联系点连接不上的情况，所以你读每个选项的时候一定是要把整句话带入到原句中联系，这样就算没拼接上你也可以找到答案和整句话的联系点是什么。只要你找因果关系--联系点--的正确率高，这种和你自己想得联系点对接不上的选项一搬都不make sense
感觉说的很乱，拿寂静里的题给你举个例子。
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?
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 released into the area occur naturally in areas of the ocean where plankton thrive.
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发表于 2015-11-21 01:47:07
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