本人刚开始看GMAT，想问一下og12的62题属于什么类型的逻辑题啊？假设？加强？

leious524

When there is less rainfall than normal, the water level
of Australian rivers falls and the rivers fl ow more
slowly. Because algae whose habitat is river water
grow best in slow-moving water, the amount of algae
per unit of water generally increases when there has
been little rain. By contrast, however, following a
period of extreme drought, algae levels are low even
in very slow-moving river water.

Which of the following, if true, does most to explain
the contrast described above?

(A) During periods of extreme drought, the
populations of some of the species that feed on
algae tend to fall.

(B) The more slowly water moves, the more
conducive its temperature is to the growth
of algae.

(C) When algae populations reach very high levels,
conditions within the river can become toxic for
some of the other species that normally live
there.

(D) Australian rivers dry up completely for short
intervals in periods of extreme drought.

(E) Except during periods of extreme drought, algae
levels tend to be higher in rivers in which the
fl ow has been controlled by damming than in
rivers that fl ow freely.

leious524

在线等， 对于GMAT的cr糊里糊涂的，求好心人帮助一下我这个超级菜

miss绿光

neither
就是explain题。

leious524

哦，谢谢啊。
explain型？我听的新东方的网络课堂里的逻辑，没听到有explain型的啊，能不能详细告诉我下，或者告诉我怎么样系统的了解GMAT cr啊？

fifiwong

explain the paradox

EMMALIULIU

看manhattan 5th的逻辑，这题型是explain a discrepancy。