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GRE 测试14

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The author’s primary purpose is to
identify the influences informing a particular geological theory about the processes thathave shaped Earth’s surface
identify differences between two views of the extraterrestrial impactors and argue that thephenomenon has influenced the development of plate tectonic theory
argue that an explanation is based on a dubious evidence and propose an alternative explanation
discuss an explanation and place that explanation under theoretical context
suggest that apparent discrepancy poses a serious problem for a particular theory thatmany have believed
The author of the passage mentions the “continuum” in order to
point out a relationship between plate tectonics and the nineteenth-century geology
explain how a theory of Newton’s could influence geology and plate tectonic theory.
distinguish between two sources of energy that contributed to the development of Earth’ssurface.
point out a similarity between the surface of impactors and the surface of Earth.
identify a feature of Shaw’s view that deviates from current scientific theories.
The passage suggests which of the following about tectonic theory?
It has led scientists to overlook an important contribution to classical geologists fromNewton.
It has been more successful than was classical geology in accounting for heat loss fromEarth’s core.
It is based on premise about Earth’s processes discerned in Newton’s thought.
It has correctly explained the effects of extraterrestrial impactors on Earth’s surface.
It corrects a fundamental flaw in classical geology.
From the passage it can be inferred that Omagua depended on
overland transport to communicate between villages
foraging inland to obtain foodstuffs not available locally
some form of fertilization to boost agricultural production
fish and turtles for at least part of their diet
trade with other peoples for some raw materials
When selecting a nest, the female of the river blenny (a small fish) appears to be sensitive toboth size and orientation. Blennies deposit their eggs preferably in nests under large stonesand in nests facing southeast. Southeast-facing nests contain larger egg clutches, a fact thatcannot be completely explained by differences in nest stone sizes. Moreover, in a recent study,current speeds upstream of the nest and at the nest entrance were similar for nests facingsoutheast and those facing in other directions. A southeast-facing entrance per se thus seemsto be the specific nest feature preferred by females, rather than the effect of selectivepositioning on current at nest entrance. The reasons for this preference are unclear, however.1. The passage is concerned with which of the following
determining the different ways in which current speeds can influence the nestingpreferences of female river blennies
establishing nest orientation as a determining factor in egg laying among female riverblennies
questioning the importance of nest size as an influence on egg laying among female riverblennies
comparing the features of female river blennies that face southeast with those of nestsfacing in other directions
examining how female river blennies determine the relative importance of nest size versusnest orientation