Critical Reasoning 질문:
A compelling optical illusion called the illusion of velocity and size makes objects appear to be moving more slowly the larger the objects are. Therefore, a motorist's estimate of the time available for crossing a highway with a small car approaching is bound to be lower than it would be with a large truck approaching.
The conclusion above would be more properly drawn if it were made clear that the _____________.
A. truck's speed is assumed to be lower than the car's
B. truck's speed is assumed to be the same as the car's
C. truck's speed is assumed to be hihgher than the car's
정답이 왜 B,C인가요?
Short Passage 질문
A mysterious phenomenon is the ability of over-water migrants to travel on course. Birds, bees, and other species can keep track of time without any sensory cues from the outside world, and such biological clocks clearly contribute to their "compass sense." For example, they can use the position of the Sun or stars, along with the time of day, to find north. But compass sense alone cannot explain how birds navigate the ocean: after a flock traveling east is blown far south by a storm, it will assume the proper northeasterly course to compensate. Perhaps, some scientists thought, migrants determine their geographic position on Earth by celestial navigation, almost as human navigators use stars and planets, but this would demand of the animals a fantastic map sense. Researchers now know that some species have a magnetic sense, which might allow migrants to determine their geographic location by detecing variations in the strength of the Earth's magnetic field.
Q. It can be inferred from the passage that if the flock of birds were navigating by compass sense alone, they would, after the storm, fly
A. east
B. north
C. northwest
D. south
E. southeast
정답이 왜 A인가요?
Q. Of the following descriptions of migrating animals, which most strongly suggests that the animals are depending on magnetic cues to orient themselves?
A. pigeons can properly readjust their course even when flying long distances through exceedingly dense fogs
D. Swallows are able to return to a given spot at the same time every year
E. Monarch butterflies coming from different parts of North America are able to arrive at the same location each winter
정답이 왜 A 인가요?
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