Galaxies are classified into different types according to their shape. Which of the following is a type of galaxy? A. Spiral galaxy B. Square galaxy C. Triangular galaxy D. Oval - shaped planet 相关知识点: 试题来源: 解析 A。解析:星系根据形状可分为不同类型,螺旋星系(Spiral galaxy)是其中...
C. A galaxy has a definite shape, while a constellation does not. D. A galaxy can be seen only through a telescope, while a constellation can be seen with the naked E. ye. 相关知识点: 试题来源: 解析 A。本题考查星系和星座的对比。选项 A 正确,星系是恒星的集合体,星座只是想象中的恒星...
A planet C. A galaxy D. A moon 相关知识点: 试题来源: 解析 C。本题考查宇宙中天体大小的知识。A 选项“star”(恒星)比行星和卫星大,但没有星系大;B 选项“planet”(行星)小于恒星和星系;C 选项“galaxy”(星系)包含众多恒星和其他天体,是最大的;D 选项“moon”(卫星)通常比行星小。
In the science of astronomy, “galaxy” is a key term. Which of the following is a synonym? A. constellation B. nebula C. star system D. cosmos 相关知识点: 试题来源: 解析 C。解析:“galaxy”星系。“star system”恒星系,与星系概念最为接近;“constellation”星座,是天空中星星组成的图案;“...
A. The galaxy we live in is unique for its special spirals. B. The stars in the center of the Milky Way are more twisted. C. The distance from the sun to other stars is already known to scientists. D. The rotation of its inner center forces the Milky Way to twist. 相关知识点:...
D. Sunflower Galaxy—a galaxy with multiple arms radiating from its bright core. E. [细节理解题。根据IRREGULAR GALAXY部分的“many other shapes of galaxies that aren't spiral or elliptical”可知,不规则星系的定义是既不是螺旋式的也不是椭圆的,由此可知,雪茄星系可以被归入不规则星系。故选C项。] ...
A. Black holes are completely black. B. Galaxies are made up of only stars. C. The Milky Way is the only galaxy. D. Gravity plays an important role in the universe. 相关知识点: 试题来源: 解析 D。A 选项黑洞不是完全黑的,错误。B 选项星系不仅由恒星组成,还有其他物质,错误。C 选项银河...
根据文章第三段最后一句中 scientists from the Canadian Hydrogen Intensity Mapping Experiment CHIME)detected repeated radio signals from a galaxy 1. 5 billion light years away,possibly sent by intelligent aliens.来自加拿大氢强度测绘实验(CHME)的科学家检测到来自15亿光年外星系的重复无线电信号,可能是由有...
Which of the following is not a part of the solar system? A. Comet B. Galaxy C. Asteroid D. Satellite 相关知识点: 试题来源: 解析 B。星系不属于太阳系的组成部分。选项 A 彗星、选项 C 小行星、选项 D 卫星都是太阳系的一部分,所以答案是 B 星系。
Size. C. Number of stars. D. Distance from the Sun. E. [细节理解题。根据SPIRAL GALAXY部分的“have spiral arms”, ELLIPTICAL GALAXY部分的“shaped like a huge egg”和IRREGULAR GALAXY部分的“many other shapes of galaxies”可知,星系主要是根据形状来进行分类的。故选A项。] 相关知识点: ...