The asteroid is small. What is the plural form of “asteroid”? A. asteroids B. asteroies C. asteroides D. asteroidis 相关知识点: 试题来源: 解析 A。“asteroid”的复数形式是直接在后面加“s”,即“asteroids”。选项 B、C、D 都是错误的复数形式。
Tens of millions of years ago, an asteroid(小行星)hit what is now the Yucatan Peninsul a of Mexico.The event led to a global mass extinction that has been linked to the end of the dinosaurs. New research shows what that great disaster led to is a modern age of fish.Sixty-six million...
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is keeping celestial bodies and projectiles from flying off into the open space. It also sets limits to the playing field. When a projectile hits the asteroid belt, it simply explodes. However, if a planet or a moon wanders off into the area, the impact causes an explosion...
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A. It is very unlikely but the danger exists. B. Such a collision might occur once every 25 years. C. Collisions of smaller asteroids with Earth occur more often than expected. D. It’s still too E. arly to say whether such a collision might occur. ...
An asteroid is a rocky object in space that's smaller than a planet — they're sometimes called minor planets or planetoids, according to NASA. Other sources refer to them loosely as "space debris," or leftover fragments from the formation of the solar system (like the extra pieces that ...
At present, NASA is aware of a number of asteroids several kilometers across that are within striking distance of the Earth at some point during their orbits. In the past few years, there have been several near-misses. In March 2004, an asteroid about 30 meters in diameter passed just ...
Asteroid definition What is an asteroid? UsingNASA definitions, an asteroid is "A relatively small, inactive, rocky body orbiting the sun," while a comet is a "relatively small, at times active, object whose ices can vaporize in sunlight forming an atmosphere (coma) of dust and gas and, ...
Asteroid definition What is an asteroid? UsingNASA definitions, an asteroid is "A relatively small, inactive, rocky body orbiting the sun," while a comet is a "relatively small, at times active, object whose ices can vaporize in sunlight forming an atmosphere (coma) of dust and gas and, ...