The planets ___ in different orbits. A. move B. moved C. are moving D. will move 相关知识点: 试题来源: 解析 A。本题考查一般现在时。行星在不同的轨道上运行是客观事实,用一般现在时,主语是 the planets,谓语动词用原形 move。moved 是过去式;are moving 是现在进行时;will move 是一般将来...
The planets are held in their orbits ___ the gravitational pull of the Sun. A. by B. with C. through D. from 相关知识点: 试题来源: 解析 A。“被……所吸引”用“be held in...by...”,by 在这里表示方式、手段。反馈 收藏
We find that planets are captured into wide orbits in the typical range ~100-10^6 AU, and have a wide range of eccentricities (thermal distribution). Typically, 3-6 x (f_FFP/1) % of all stars capture a planetary companion with such properties (where f_FFP is the number of FFP per...
Kepler's first law states that the shape of the orbits of the planets is what, with the Sun at one what?Kepler's:Kepler's laws of planetary motion are three laws which describe the motion of planets around the sun. Kepler has three formulas within ...
The inner planets, Mercury and Venus, move so rapidly you can see their motion after a single night.水星和火星这种内行星的移动速度很快，以至于一个晚上就能看出变化。The outer planets are more leisurely, but wait long enough and they too will be seen to move, sliding through the constellations....
II. 1 .pollution!.universal 3.announced; cure 4,scientist 5.cautious 6.exposed 7.contributed 8.attention 9.spinning 词形转换练习:U2B5 I.Put down required forms of the words given.相关知识点: 试题来源: 解析 attractions 反馈 收藏
百度试题 结果1 题目The planets move around the Sun ___ elliptical orbits. A. in B. on C. at D. with 相关知识点: 试题来源: 解析 A。“在……轨道上”用“in...orbits”。反馈 收藏
B.The planets seem tired of their same old orbits. C.In doing so, we have made many interesting discoveries. D.All the planets in our solar system travel at different speeds. E.However, in fact, both planets are still moving on the same orbit. ...
one planet for every one of the approximately 100 billion stars in the galaxy. But their analysis only considers planets that are in close orbits around M dwarfs—not the outer planets of an M-dwarf system, or those orbiting other kinds of stars. As a result, they say, their estimate is...
Graphs indicating the positions of the planets during the current year, to be found in astronomical almanacs or yearbooks. About this Chapter Title The Position of the Planets in their Orbits Book Title Practical Work in Elementary Astronomy Book Part A Pages pp 71-72 Copyright 1969 DOI 10.10...