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Even though intelligence may be quite (i)_____, and even though scientists may have made frustratingly (ii)_____ progress in understanding it, many experts on intelligence still think that the potential (iii)_____ of the quest to understand intelligence make it worth continuing. For instance, a brain-based understanding of intelligence may help teachers design strategies for educating children more effectively.
_____ the notion that attention is a limited resource, scientists have found lots of evidence that drivers with cell phones drives slower and are more apt to miss important details than drivers who drive solely on the road.
The university's once _____ department of economic history has lost prestige and transmogrified into a department of management and marketing.
Compared to Earth over most of its 4 to 6-billion-year history, the world we live in today is quite (i)_____. Of course, it is human nature to regard the world that we are used to as (ii)_____. The oceans, prairies, and mountain chains---even the air we breathe---seem the norm and therefore (iii)_____.
Gravitational waves-ripples in the geometry of space-time-are analogous to electromagnetic waves. The challenge in trying to observe these waves directly is that they are extremely weak. To make waves large enough to be (i)_____, the most (ii)_____ events in the universe are required: supernova explosions, the formation of black holes, or the collision of stars. Even so, the effects are (iii)_____. The geometry changes so little that a distance of several kilometers changes by less than the diameter of a proton.
The assumption that children learn about science primarily in the classroom is so _____ that few scientists, educators or policymakers question it, despite an ever-growing body of evidence demonstrating that most science is learnt outside of school.
Unlike some models of mathematical tasks that distinguish between lower and higher cognitive demands, Carolyn Kieran`s model focuses only on the type of algebraic activity and thus is not ______ with regard to cognitive demand.
All the scholars at the conference agree on the character of the general philosophical concepts under discussion, but this does not imply ________ with regard to details.
The lobbyist argues that current environmental regulations must be (I)________ to prevent a recession, thus reviving the notion that economic progress and environmental protection are inherently (ii)________.
The apparent promise of clean alternatives to environmentally harmful fossil fuels might actually (i)_______ fossil-fuel industries by framing energy problems not as a matter of excessive consumption but rather as a remediable lack of clean energy production, thus enticing citizens to (ii)______ the current energy consumption patterns from which fossil-fuel industries profit.
Various factors complicate researchers` efforts to study time spent on housework. For example, housework may not stand out much in respondents` memories because it is so (i)_______ everyday life, and (ii)______ problems among survey subjects may thus be more severe than for other activities.
The lack of (i)______ the poetry of the postwar decades has led not, as one might have expected, to (ii)______ poetry, but to a curious closure in which all poets and forms of poetry are (iii)_______ and alone, not even respected establishment poets, command excitement.
Investigating physiological ______ is not how biologists typically study function and structure, but it is not entirely unreasonable--- if abnormalities in the lungs hinder breathing, then the lungs are very likely the organ required for breathing.
Many great ghost stories remain________ about the existence of their phantoms, whereas others leave no doubt about their ghosts` reality.
Although the courts have ______ an extremely flexible test for determining the admissibility of expert testimony, that does not mean that all experts will be allowed to testify.
For more than 100 years, anarchism has been an embarrassing estranged sibling in the family of international radicalism, and its bad behavior had made it easy to ______ the awkward but important questions anarchism poses.
Because the organization she inherited was remarkably _____,her first priority was the establishment of a vigorous fund-raising campaign.
Governments frequently justify their attempts to ______material by claiming that such material must be kept strictly confidential for national security reasons when in fact the principal motive may be a desire to avoid political embarrassment.
The reason geological activity on Mars is so (1)_____while on Earth it remains (2)______ is that Earth`s diameter is about twice the size of Mars`. Because Mars is smaller than Earth, it cooled faster, and therefore it lost the internal heat that drives tectonic activity.
The archaeologists argues that botanists have often (1)_______ the role of human agency in the dispersal of floral species, pointing out that a range of plants that botanists formerly thought to be (2)______were actually introduced to Australia by people in the recent and distant past.

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