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GRE阅读材料GRE阅读训练资料:视觉感受与能量反射接收

来源:新东方在线 2017-01-31 22:47 /

­  21. The author implies that making a sharp division between subject and object in physics is

­  (A) possible in a measurement o object’s length and position, but not in a measurement of its energy

­  (B) still theoretically possible in the small-scale world of atoms and electrons

­  (C) possible in the case of observations involving the passage of a complete quantum

­  (D) no longer an entirely accurate way to describe observation of the universe(D)

­  (E) a goal at which scientists still aim

­  22. The author’s use of the phrase “in a sense” (line 34) implies which of the following?

­  (A) Quanta of extremely long wavelength are essentially graduated in inches.

­  (B) quanta of one-inch wavelength are not precisely analogous to yardsticks graduated in inches.

­  (C) Quanta of extremely long wavelength, in at least on e respect, resemble quanta of shorter wavelength.

­  (D) quanta of on-inch wavelength and quanta of extremely long wavelength do not differ only in their wavelengths.(B)

­  (E) quanta of one-inch wavelength must be measured by different standards than quanta of extremely long wavelength.

­  23. According to the passage, the quantum theory can be distinguished from previous theories of physics by its

­  (A) insistence on scrupulously precise mathematical formulations

­  (B) understanding of the inherent interrelationship of perceiver and perceived

­  (C) recognition of the need for sophisticated instruments of measurement

­  (D) emphasis on small-scale rather than on large-scale phenomena(B)

­  (E) regard for philosophical issues as well as for strictly scientific ones

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