首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
How many planets are there in the solar system revolving around the sun?
How many planets are there in the solar system revolving around the sun?
admin
2019-10-21
123
问题
How many planets are there in the solar system revolving around the sun?
Earth is one of nine planets which revolve(绕转)around the sun. This family of planets, with their moons, is known as the solar system. Since we live on Earth, we think it is the most important planet. But the other planets are also interesting. Some are smaller than Earth, some larger;some are hotter , some colder. Each one is different from all the others and has something special about it. No one knows for certain how the solar system began. We do know a lot about the planets, however, from the science of astronomy(天文学). Astronomers have done research on the planets and other objects in space for thousands of years. Astronomy is a very complicated science. We look at the other planets to study them, but the planet we are on is moving all the time. Computers have helped us in the past twenty or thirty years. The satellites we sent into space to measure and take pictures also tell a lot a-bout the planets and help us to understand them.
Mercury(水星)is the closest planet to the sun. It is also the smallest and fastest planet. The speed of the planet gave it its name: Mercury was the rapid messenger of the Roman gods. Mercury completes its orbit around the sun in only 88 days, while Earth’s orbit takes 365 — days. A day on Mercury, however, is much longer than a day on Earth. Earth rotates on its axis once every 24 hours. Mercury rotates on its axis once every 59 days.
Venus(金星)is the second planet in distance from the sun. It is about the same size as Earth, and it comes closer to Earth than any other planets. Next to the sun and the moon, Venus is the easiest object in the sky to see. People of ancient times loved its brightness and beauty so much that they named it after the Roman goddess of love and beauty.
Venus revolves around the sun once every 225 days and rotates on its axis once every 224 days. Information from telescopes and satellites shows us that the planet is very hot. The temperature is usually between 300 and 675 degrees Celsius. We can observe both Venus and Mercury either in the evening or early in the morning just before the sun rises.
Mars(火星)is called the red planet because of its definite(明确的)red-orange color. It is the fourth farthest planet from the sun. A day on Mars is only about 40 minutes longer than a day on Earth, but a year lasts 687 days. The planet was named after the Roman god of war.
For many years, people believed that there was life on Mars, but we now know that there probably isn’t. The Mariner space program sent many satellites to Mars. We have excellent photos and information on this neighbor planet, and nothing suggests that there is any life there.
The fifth planet from the sun is also the largest of all the planets, Jupiter(木星). Jupiter revolves around the sun once every 12 years, yet its day is amazingly(惊人地)short. Its rotation, or its day, is only about 10 hours long. This is the fastest rotation—the shortest day—of any of the planets.
The planet’s name is appropriate, since Jupiter was the largest Roman god—the king of all the other gods. If you can imagine Jupiter as a hollow ball, all of the other planets would fit inside and there would still be a lot of room left. Jupiter has fourteen moons, the largest number of any planets.
选项
答案
88 days
解析
转载请注明原文地址:https://kaotiyun.com/show/EeWd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
Accordingtothetext,whatistheStockExchange?Whichofthefollowingstatementsisnottrue?
Accordingtothetext,whatistheStockExchange?Accordingtoparagraph3,whathappenedon16thNovember,1971?
Oneofthemostimportantsocialdevelopments(31)helpedtomakepossibleashiftinthinkingabouttheroleofpubliceducatio
I’dliketotalktoyoutodayaboutanarticlethatappearedintheHonoluluAdvertiser.Thearticlewasconcerned(31)somethin
Howcanyouinterpretthesentence,middle-classwomenarebecomingincreasingly"polarised"(Para.3)?Whatattributestothe
AndrenaGravidaisthenameofawildbeedecliningintheUnitedKingdomandtheNetherlands.A(31)ofmonthsagotherecentd
AndrenaGravidaisthenameofawildbeedecliningintheUnitedKingdomandtheNetherlands.A(31)ofmonthsagotherecentd
Whoisplanningtointroducearatingsystemthissummerforuniversitystudents?
A=HallucinogensB=CocaineC=AlcoholWhichdrug...mayslowdownbodyfunction?71.______canleadtothe
Besidesthefunctionsasavitalentertainmentmedium,whatelsecanpeopleuseaTVas?
随机试题
产品生命周期的开始点是_______。
实践是检验真理的唯一标准。这是因为【】
某牛场10%的牛发生羞明、流泪、痉挛,有浆液性或脓性分泌物,角膜混浊,血管增生,有的病牛出现角膜溃疡,体温40.5~41.5℃,精神沉郁,食欲不振。最可能发生的疾病是
清肝火的药物是主清心与小肠之火的药物是
下列各项,关于仲裁庭组成的表述正确的是()。
某公司生产甲产品和乙产品,甲产品和乙产品为联产品。6月份发生加工成本600万元。甲产品和乙产品在分离点上的数量分别为600个和400个。采用实物数量分配法分配联合成本,甲产品应分配的联合成本为()万元。
孙某曾应聘在甲公司工作,试用期满后从事技术工作,2年后跳槽至乙企业成为该企业的业务骨干。甲公司为实施新的公司战略,拟聘请孙某担任公司高管。经协商,双方签订了劳动合同,约定:(1)劳动合同期限为2年,试用期为3个月;(2)合同期满或因其他原因离职后,孙某在3
A会计师事务所首次接受D公司委托,对D公司2014年财务报表进行审计。D公司2013年度财务报表经由C会计师事务所审计.并且因应收账款项目无法获取充分适当的审计证据出具了保留意见的审计报告。要求:分别回答下列问题。上期财务报表已由C会计师事务
给定资料1.“六神丸”在日本摇身一变成了“救心丸”,“牛黄救心丸”装进韩国的新壶成了“牛黄清心液”……这些让国内中医药人士痛心不已的事实说明,我国中药领域的知识产权保护还非常脆弱。中药要得到更好的发展,专利保护迫在眉睫。中药是我国拥有自
Scientistsaresupposedtochangetheirminds.【F1】Havingadoptedtheirviewsonscientificquestionsbasedonanobjectiveeval
最新回复
(
0
)