15.Under ethical guidelines recently adopted by the NationalInstitutes of Health, human genes are to be manipulated only to correctdiseases for which ____ treatments are unsatisfactory.
similar
most
dangerous
uncommon
alternative
16.The significance of the Magna Carta lies not in its ____ provisions, but in its broader impact: it made the king subject to the law.
specific
revolutionary
implicit
controversial
finite
17.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.
scarce. . common
accessible.. marginal
unidentified.. subsidized
conserved . . public
plentiful.. profitable
18.Although the passage of years has softened the initially hostile reaction to his poetry, even now only a few independent observers ____ his works.
praise
revile
scrutinize
criticize
neglect
19.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.
impulse.. surpassing
referent.. recognizing
force.. acknowledging
inspiration.. emulating
channel.. mimicking
20.It is ____ for a government to fail to do whatever it can to eliminate a totally ____ disease.
folly.. innocuous
irresponsible.. preventable
crucial.. fatal
instinctive.. devastating
detrimental.. insignificant
21.The legislators of 1563 realized the ____ of trying to regulate the flow of labor without securing its reasonable remuneration, and so the second part of the statute dealt with establishing wages.
intricacy
anxiety
futility
necessity
decadence
22.The ____ with which the French aristocracy greeted the middle-class Rousseau was all the more ____ because he showed so little respect for them.
deference.. remarkable
suspicion.. uncanny
reserve.. unexpected
anger.. ironic
appreciation.. deserved
23.The action and characters in a melodrama can be so immediately ____ that all observers can hiss the villain with an air of smug but enjoyable ____.
spurned.. boredom
forgotten.. condescension
classified. .self-righteousness
plausible.. guilt
gripping. .skepticism
24.In the design of medical experiments, the need for ____ assignment of treatments to patients must be ____ the difficulty of persuading patients to participate in an experiment in which their treatment is decided by chance.
independent.. amended by
competent.. emphasized by
mechanical.. controlled by
swift. .associated with
random.. reconciled with
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