71. While scientists dismiss as fanciful the idea of sudden changes in a genetic code (spontaneous mutation), it is possible that nature, like some master musician, _________ on occasion, departing from the expected or predictable.
　　(A) repeats
　　(B) improvises
　　(C) ornaments
　　(D) corrects
　　(E) harmonizes
　　72. Despite the_________ of time, space, and history, human societies the world over have confronted the same existential problems and have come to remarkably _____ solutions, differing only in superficial details.
　　(A) continuity.. identical
　　(B) uniformity.. diverse
　　(C) actualities.. varied
　　(D) contingencies.. similar
　　(E) exigencies.. unique
　　73. Although he was known to be extremely_________ in his public behavior, scholars have discovered that his diaries were written with uncommon_________.
　　(A) reserved.. frankness
　　(B) polite.. tenderness
　　(C) modest.. lucidity
　　(D) reticent.. vagueness
　　(E) withdrawn.. subtlety
　　74. With the_________ of scientific knowledge, work on the new edition of a textbook begins soon after completion of the original.
　　(A) limitation
　　(B) culmination
　　(C) veneration
　　(D) certainty
　　(E) burgeoning
　　75. She is most frugal in matters of business, but in her private life she reveals a streak of ________.
　　(A) antipathy
　　(B) misanthropy
　　(C) virtuosity
　　(D) equanimity
　　(E) prodigality
　　76. If the state government's latest budget problems were_________, it would not be useful to employ them as_________ examples in the effort to avoid the inevitable effects of shortsighted fiscal planning in the future.
　　(A) typical.. representative
　　(B) exceptional.. aberrant
　　(C) anomalous.. illuminating
　　(D) predictable.. helpful
　　(E) solvable.. insignificant
　　77. J ust as some writers have_________ the capacity of language to express meaning, Giacometti_________ the failure of art to convey reality.
　　(A) scoffed at .. abjured
　　(B) demonstrated.. exemplified
　　(C) denied.. refuted
　　(D) proclaimed.. affirmed
　　(E) despaired of .. bewailed
　　78. In spite of the fact that it is convenient to divide the life span of animals into separate stages such as pre-natal, adolescent, and senescent, these periods are not really ________.
　　(A) advanced
　　(B) variable
　　(C) repeatable
　　(D) connected
　　(E) distinct
　　79. Although the number of reported volcanic eruptions has risen exponentially since 1850, this indicates not_________volcanic activity but rather more widespread and_______ record keeping.
　　(A) abating..detailed
　　(B) increasing..systematic
　　(C) substantial..erratic
　　(D) stable..superficial
　　(E) consistent..meticulous
　　80. The challenge of interpreting fictional works written under politically repressive regimes lies in distinguishing what is_________ to an author's beliefs, as opposed to what is_________by political coercion.
　　(A) innate.. understood
　　(B) organic.. imposed
　　(C) contradictory.. conveyed
　　(D) oblique.. captured
　　(E) peripheral.. demanded