| GRE考试易错题（2019/1/24） |
| 第1题：It can be inferred from the passage that theCepheid variable method of estimating galactic distances would be likely to yield experimentally flawed results in which of the following circumstances A、If the luminosity of ordinary stars being compared with that of aCepheid star were affected by parallax. B、If the apparent brightness of theCepheid star being studied required an unusually long period of time to vary. C、If the gravitational interference surrounding theCepheid star being observed were more negligible than in most cases. D、If theCepheid star being studied existed on the periphery of the universe, at an extremely large distance from the observer. E、If theCepheid star being studied were in the same galaxy as the observer. |
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| 第2题：Childhood memoirs often gain their poignancy through a sense of displacement: each lesson in experience is accompanied by a loss of______. A、perspective B、innocence C、veracity D、pessimism E、probity |
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| 第3题：Hitherto, there is no evidence yet that would definitively prove whether or not some dinosaurs were warm-blooded, but scientists have begun to investigate oxygen isotopic abundances in the annual growth bands of teeth or bones of high Line latitude, hence seasonally influenced, terrestrial dinosaurs. The ratio of oxygen isotopes depends on temperature, and an absence of seasonal variations in oxygen 18―a heavy version of the common oxygen 16 atom―would strongly suggest that the animals maintained a constant internal temperatures. Such a finding would not, however, constitute "proof" that dinosaurs were warm blooded, as there are external mechanisms that cold-blooded animals employ to regulate body temperatures and thereby influence metabolic rates. More nettlesome is that proof would have to come from discovery of intact dinosaur remains in which the soft tissue had not been replaced or altered, and from which the biomolecules responsible for thermoregulation could be extracted identified and characterizeD、Such a proof is unlikely, as it would require an almost impossible level of preservation over 65 million years, plus the advent of biotechnology that does not yet exist. The author refers to "external mechanisms" primarily in order to________. A、suggest that a biochemical analysis of dinosaur thermoregulation might be a waste of time B．suggest that other means than warm-bloodedness may account for evidence of dinosaur thermoregulation C．explain why scientists are interested in looking for an absence of seasonal variations in oxygen 18 traces D．suggest that metabolic rates, not warm-bloodedness, may have been the key factor in certain dinosaurs’’ survival E．imply that other factors beside temperature may dictate the ratio of oxygen isotopes |
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| 第4题： EXECRABLE: A．incorrigible B．laudable C．naive D．abundant E．sagacious |
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| 第5题：The author argues that aesthetic creation is useful to an understanding of the visual brain because it A、allows abstract ideas to mutate into new and hitherto untested forms B、helps scientists synthesize several distinct views of the operation of the brain C、manifests in an observable form the laws by which the brain functions D、subordinates the particular to the general, streamlining the artistic process E、establishes the constant and essential properties of objects and surfaces |
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