下面是新东方网整理的2021GRE填空练习题汇总,供大家参考。
1. The Chinese, who began systematic astronomical and weather observations shortly after the ancient Egyptians, were assiduous record-keepers, and because of this, can claim humanity's longest continuous ________ of natural events.
(A) defiance
(B) documentation
(C) maintenance
(D) theory
(E) domination
2. Because many of the minerals found on the ocean floor are still ________ on land, where mining is relatively inexpensive, mining the ocean floor has yet to become a ________ enterprise.
(A) scarce. . common
(B) accessible.. marginal
(C) unidentified.. subsidized
(D) conserved . . public
(E) plentiful.. profitable
3. The valedictory address, as it has developed in American colleges and universities over the years, has become a very strict form, a literary ________ that permits very little ________.
(A) text.. clarity
(B) work.. tradition
(C) genre.. deviation
(D) oration.. grandiloquence
(E) achievement.. rigidity
4. A human being is quite ________ creature, for the gloss of rationality that covers his or her fears and ________ is thin and often easily breached.
(A) a logical.. problems
(B) a frail.. insecurity
(C) a valiant.. phobias
(D) an ambitious.. morality
(E) a ludicrous.. laughter
5. Although the passage of years has softened the initially hostile reaction to his poetry, even now only a few independent observers ________ his works.
(A) praise
(B) revile
(C) scrutinize
(D) criticize
(E) neglect
6. Unlike philosophers who constructed theoretically ideal states, she built a theory based on ________; thus, although her constructs may have been inelegant, they were ________ sound.
(A) reality.. aesthetically
(B) intuition.. intellectually
(C) surmise.. scientifically
(D) experience.. empirically
(E) conjecture.. factually
7. Once a duckling has identified a parent, the instinctive bond becomes a powerful ________ for additional learning since, by ________ the parent, the duckling can acquire further information that is not genetically transmitted.
(A) impulse.. surpassing
(B) referent.. recognizing
(C) force.. acknowledging
(D) inspiration.. emulating
(E) channel.. mimicking
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