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
Scientists said they have found evidence of a giant planet far out in our solar system. In a statement, the California Institute
Scientists said they have found evidence of a giant planet far out in our solar system. In a statement, the California Institute
admin
2022-10-01
65
问题
Scientists said they have found evidence of a giant planet far out in our solar system. In a statement, the California Institute of Technology—Caltech—said this planet travels a very strange " long and thin orbit in the distant solar system. " The discovery was made by two researchers at Caltech; Konstantin Batygin and Mike Brown. They used mathematical modeling and computer simulations (模拟) to find the planet. So far, there have not been any direct observations of the planet.
"My jaw hit the floor," said astronomer (宇航员) Mike Brown, the moment he realized there might be a ninth planet.
The scientists said it would take this planet 10,000 to 20,000 years just to make one full orbit around the Sun. The new planet, called " Planet Nine", has a mass about 10 times the size of Earth. If they are right, the newly found planet would be the ninth planet in our solar system. Pluto (冥王星) had been called the ninth planet until 2006, when it was renamed a "dwarf planet. " Actual confirmation of a ninth planet would be very big news. "This would be a real ninth planet," Brown said in the statement. "There have only been two true planets discovered since ancient times, and this would be a third. It’s a pretty substantial part of our solar system that’s still out there to be found, which is pretty exciting. "
While they did not get a picture of
"Planet Nine"
yet, the scientists say they are using the biggest—and best—telescopes on Earth to try to find "Planet Nine. " They are also working on improving their computer simulations. They want to find out more about "Planet Nine’s" orbit, and its impact on the outer part of our solar system.
It can be inferred from Paragraph 4 that________.
选项
A、there is no actual confirmation about the ninth planet
B、no true planets were discovered in ancient times
C、scientists have found three planets in modern times
D、the ninth planet is the only one discovered since ancient times
答案
A
解析
第四段。综合分析题。B、C和D选项均与第四段布朗提到的“自古以来,只有两颗真正的行星被发现,而这会是第三颗。”矛盾;A选项符合第四段第一句,故选A。
转载请注明原文地址:https://jikaoti.com/ti/8kQiFFFM
0
成人本科学位英语
相关试题推荐
Formuchofthe20thcentury,milkwasasimplepartofdailylifeintheU.S.,asfarmersraisedcows,milkmendeliveredbottle
Americahaslongbeenresistanttoadequatepovertypoliciesbecauseofitsstrongstrainofthinkingthatthepoorareresponsi
Everyonewantstobeauthentic.Youwanttobetruetoyourself,notaslavishfollowerofsocialexpectations.Youwantto"liv
MartezaHasanifledAfghanistanin2005whenhewassixyearsold.Duringthewarthere,hefoundhisfather’sbody,infrontof
[A]Shopkeepersareyourfriends[B]Remembertotreatyourself[C]Sticktowhatyouneed[D]Livelikeapeasant
TheInternetaffordsanonymitytoitsusers,ablessingtoprivacyandfreedomofspeech.Butthatveryanonymityisalsobehind
Ittookdecadestoprovethatcigarettesmokingcausescancer,heartdisease,andearlydeath.Ittook【C1】________yearstoestab
Therewasatimeinthelate17thcenturywhennorespectablemonarchwouldbeseenwithoutaguitar.BothLouisXIVandCharles
A、80or90minutes.B、16or17hours.C、8or9hours.D、18or19hours.D题目问Susan每天花在手机上的时长。录音中Susan回答是18或19个小时,之后Charles表示惊讶并向S
A、You’reright.B、Nevermind.C、Helpyourself.D、No,thanks.D本题考查询问别人是否愿意增加餐点的一般疑问句及其回答。回答分为肯定和否定两种情况:肯定回答可以说Yes/Sure等,并表示感谢;否定
随机试题
依据《义务教育数学课程标准(2011年版)》教学建议,在数学教学活动中,教师应做好哪几点?
教师方某常给幼儿起侮辱性绰号,造成恶劣影响,对于方某的这种行为,所在学校或教育行政部门应当给予()。
关于互联网,习近平总书记近年来多有论述。在网络安全和信息化工作座谈会上,习近平总书记不少精辟巧妙的比喻直陈核心技术发展“隐患”,直指难点、痛点。下列有关比喻说法错误的是()。
2004年8月2日《人民日报》报道,兰州人用3年时间,绿化了兰州的南北两山。由于森林覆盖率大大提高,城市的生态环境发生了巨大变化:天蓝了,全年好于3级的天数达到339天,占总天数的92%;水清了,穿城而过的60公里黄河因此每年直接减少泥沙排入量117.8万
(89年)已知随机变量(X,Y)的联合密度为试求:(1)P{X<Y};(2)E(XY).
两次运行下列的程序,如果从键盘上分别输入3和1,则输出结果是()。main(){intx;scanf("%d",&x);if(x++>2)printf("%d
Whathasthemanbeenbusydoingallweek?
Whatwillthemandoforthewoman?
TheworkersofspaceshuttleDiscoverygotintothebackoftheshuttletolookfor______intheelectronicsthatsenddatafrom
Whydowefailtoattendtoourfamilyfinancialwell-being?Weareadvisedtoleavesomecashathometo______.
最新回复
(
0
)