Kids of any age love to read fairy tales because the storyline never limits the possibility that anything could happen. But are the most magical moments from some of our favorite stories actually possible? Basic physical principles and recent scientific research suggest that what readers might mistake for fantasies and exaggeration could be rooted in reality.So suspend your imagination for a moment, and look, as a hard-core scientist might, at the following fairy tale—The Arabian Nights. One of the most exciting objects found in fairy tales is the flying carpet. In tales from a wide variety of cultures, including The Arabian Nights, these tapestries (挂毯) take flight to carry people vast distances. Flying carpets are clearly impossible, right?Three scientists recently published a paper in the journal Physical Review Letters showing that there are conditions under which a carpet could fly. They used the basic laws of physics to show that a small, thin carpet could fly if the air were vibrating at the right frequency, much like how a piece of tissue paper floats softly to the ground when it is dropped. Their calculations showed that small waves of air in repeated fast pulses could steer a carpet at a speed of around one foot per second.Don't expect to see Aladdin flying by anytime soon, but the scientists write that all of their conditions are within the realm of possibilities in nature and in technology. Making a heavy carpet fly would, of course, require a much more powerful engine, and our calculations suggest it will remain in the magical, mystical, and virtual realm as it has existed for millennia (千年).68. What does the example of flying carpets show?A) Many magical moments could be realized in realityB) A small, thin carpet could fly like a piece of paper.C) There are possibilities that a carpet can fly in reality.D) Some magical things still remain mystical and unreal as before.

Kids of any age love to read fairy tales because the storyline never limits the possibility that anything could happen. But are the most magical moments from some of our favorite stories actually possible? Basic physical principles and recent scientific research suggest that what readers might mistake for fantasies and exaggeration could be rooted in reality. So suspend your imagination for a moment, and look, as a hard-core scientist might, at the following fairy tale—The Arabian Nights. One of the most exciting objects found in fairy tales is the flying carpet. In tales from a wide variety of cultures, including The Arabian Nights, these tapestries (挂毯) take flight to carry people vast distances. Flying carpets are clearly impossible, right? Three scientists recently published a paper in the journal Physical Review Letters showing that there are conditions under which a carpet could fly. They used the basic laws of physics to show that a small, thin carpet could fly if the air were vibrating at the right frequency, much like how a piece of tissue paper floats softly to the ground when it is dropped. Their calculations showed that small waves of air in repeated fast pulses could steer a carpet at a speed of around one foot per second. Don't expect to see Aladdin flying by anytime soon, but the scientists write that all of their conditions are within the realm of possibilities in nature and in technology. Making a heavy carpet fly would, of course, require a much more powerful engine, and our calculations suggest it will remain in the magical, mystical, and virtual realm as it has existed for millennia (千年). 68. What does the example of flying carpets show? A) Many magical moments could be realized in reality B) A small, thin carpet could fly like a piece of paper. C) There are possibilities that a carpet can fly in reality. D) Some magical things still remain mystical and unreal as before.