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relatively small size选项对应第三段第二句，应该属于类地行星的； contain选项对应第四段最后一句，属于类木行星的；temperatures选项对应第五段第三句，温度越高，逃逸速度越小，聚集气体的能力越差，所以应该属于类地行星的；density选项有一定迷惑性，原文第四段说类地行星密度大类木行星密度小，说的是类木行星...
The Jovian planets have very thick atmospheres consisting of varying amounts of hydrogen, helium, methane, and ammonia. By comparison, the terrestrial planets have meager atmospheres at best. A planet’s ability to retain an atmosphere depends on its temperature and mass. Simply stated, a gas mo...
Also, because the molecular motion of a gas depends on temperature, at the low temperatures of the Jovian planets even the lightest gases are unlikely to acquire the speed needed to escape. On the other hand, a comparatively warm body with a small surface gravity, like Earth's moon, is ...
In our own solar system, Mercury, Venus, Earth, and Mars are rocky planets, while Jupiter and Saturn are gas planets. The surface temperature of a planet depends on the solar flux it receives from its star but also depends upon its atmosphere. Present-day Venus, for example, receives 1.9...
托福备考托福阅读34套TPO样题+解析+译文16--3 Planets in Our Solar System 托福考试 复习
A year on Mercury is equivalent to 88 Earth days, making it the shortest year of any planet in the solar system A day on Mercury ( the time it takes to rotate once on its axis) is longer than its year! (176 Earth days) Mercury experiences extreme temperature variations, from 800 degre...
(21-60 kilometers per second) than the terrestrial planets.Consequently, it is more difficult for gases to "evaporate" from them.Also, because the molecular motion of a gas depends on temperature, at the low temperatures of the Jovian planets even the lightest gases are unlikely to acquire ...
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According to paragraph 5, which of the following statements is true of both Jovian and terrestrial planets? ○ The thicker the atmosphere, the smaller the planet’s mass ○ The more varied the gases in the atmosphere, the higher the temperature ○ The higher the surface gravity, the higher ...