Is Pluto a Planet?Though small and very far from the Earth, we've always thought of Pluto(冥王星) as the ninth planet in our solar system; however, there has beendebate among astronomers about Pluto's validity as a planet.Most people do in fact consider it a planet thinking t bizarre ...
But why isn't Pluto considered a planet anymore? It starts with the definition of a planet — or lack thereof. Before 2006, there weren't strict criteria for a planet. Instead, planets were loosely regarded as objects larger than asteroids that orbited the sun. In the mid-1800s, for ex...
阅读以下文章.完成阅读任务. 1. After Pluto was found in 1930, people took it as the ninth planet in our solar system. But it isn’t like other planets. 2.It is smaller and has an strange orbit. On August 24, scientists said, “ Pluto is not a planet. Abou
Is Pluto Really a Planet? the Debate Continues
a请输入您需要翻close to nature译的文本! Please input you to need to turn the text which close to nature translates! [translate] ais the second-smallest major planet (after Pluto), having a diameter of about 3,030 mi (4,880 km) and a mass about one-eighteenth of Earth's. 正在翻译,...
Before people ___ Pluto in 1930, there were ___ planets in our solar system. 小题2:根据②出完成下面的句子(每空一词)。 Every planet not only has its own ___ , but also is ___ enough. 小题3:将③处译成汉语。 ——— 试题答案 在线课程...
【题目】Why Is Pluto No Longer a Planet?The International Astronomical Union (IAU) downgraded the status of Pluto tothat of a dwarf planet because it did not meet the three criteria the IAU uses to define afull-sized planet Essentially Pluto meets all the criteria except one-t "has not ...
③ So Pluto is classified( 划归/分类) as a dwarf planet (矮行星), but no longer a planet in the solar system.Students at school will have new schoolbooks to learn the new solar system!小题1:根据①处完成下面的句子(每空一词)Before people ___ Pluto in 1930, there were ___ planets ...
8 After Pluto is no longer considered a planet, Mercury is now the smallest planet while Jupiter is still the biggest planet in our solar system.Planet Mercury has a mass of 3.3 ×10 kg and Jupitar has a mass of 1.898 ×10kg.How many times is the mass of Jupiter compare to the mass...
(1)考查there be句型。句意:除了冥王星,现在太阳系有八大行星,包括地球。分析句子可知,此处为there be句型。根据now(现在)可知,该句为一般现在时,结合空后的planets可知,此处应填are。故填are。(2)考查冠词。句意:冥王星曾经被认为是太阳系中最小的行星,也是