考场上看清楚洛基的问法哦！别给绕晕了

sammilulu

之前看帖有同学提醒大家要注意洛基题的问法，个人觉得很有意义，找出曾经刷到的一个GWD题，大家remind一下，考场上别晕了。

Plankton generally thrivein areas of the ocean with sufficient concentrations of certain nitrogencompounds near the surface, where plankton live.  Nevertheless, some areas, though rich inthese nitrogen compounds, have few plankton. These areas have particularly low concentrations of iron, andoceanographers hypothesize that this shortage of iron prevents plankton fromthriving.  However, an experimentalrelease of iron compounds into one such area failed to produce a thrivingplankton population, even though local iron concentrations increasedimmediately.

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

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

B.    Certain areas ofthe ocean support an abundance of plankton despite having particularly lowconcentrations of iron.

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

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

E.    The iron compounds released into the area occur naturallyin areas of the ocean where plankton thrive.

694837829

也一直没看清楚问题的人顶一下

angelina30205

双重否定 --> strengthen the hypothesis

谢谢LZ~~~~