Prep-82

piggy_l

82.(28316-!-item-!-188;#058&002977)

When feeding, aquatic birds known as phalaropes often spin rapidly on the water’s surface, pecking for food during each revolution.To execute these spins, phalaropes kick one leg harder than the other.This action creates upwelling currents.Because plankton on which phalaropes feed typically occurs in greater quantities well below the surface, it is hypothesized that by spinning phalaropes gain access to food that would otherwise be beyond their reach.

Which of the following, if true, most strongly supports the hypothesis?

A. Phalaropes rarely feed while on land.

B. A given phalarope spins exclusively either to the right or to the left.

C. Phalaropes sometimes spin when they are not feeding.

D. Different phalaropes spin at somewhat different rates.

E. Phalaropes do not usually spin when food is abundant at the surface.

piggy_l

thank you

pubman

题是support题型中的现象解释类，其答案极其明确，就是取否，题干结论说spin 就是为了below surface下的greater quantities food。那么答案就是not spin 在surface food is abundant。你的选项属于无关选项，1是文中没有提及left 和right， 2是没有和food产生关系。这类题是support题型中最容易预测而且答案最为固定，就是去将结论取否

piggy_l

红色的是正确答案，绿色是我的答案