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
Astronomers believe that the expanding univers is the result of an enormous and powerful explosion catled the Big Bang. The Big
Astronomers believe that the expanding univers is the result of an enormous and powerful explosion catled the Big Bang. The Big
admin
2018-09-25
42
问题
Astronomers believe that the expanding univers is the result of an enormous and powerful explosion catled the Big Bang. The Big Bang theory may explain how the universe formed.
The Big Bang theory states that the universe began to expand with the explosion of concentrated matter and energy and has been expanding ever since. According to the theory, all the matter and energy in the universe was once concentrated into a single place. This place, of course, was extremely hot and dense. Then some 15 to 20 billion years ago, an explosion - the Big Bang - shot the concentrated matter and energy in all directions. The fastest moving matter traveled farthest away. Energy, too, began moving away from the area of the Big Bang.
If the Big Bang theory is correct, the energy left from the Big Bang will be eventy spread out throughout the universe. This energy is known as background radiation. And indeed, scientists have discovered that the background radiation is almost the same throughout the entire universe. The constant background radiation is one observation that supports the Big Bang theory. After the initial Big Bang, the force of gravity began to affect the matter racing outward in every direction. Gravity is a force of attraction between objects. All objects have a gravitational attraction. This force of gravity began to pull matter into clumps.
At some time, the clumps forned huge clusters of matter. These clumps became the galaxies of the universe. But even as the galaxies were forning, the matter inside the galaxies continued to race away from the area where the Big Bang had occurred. And this is just what astronomers have discovered. All of the galaxies are spending away from the center of the universe.
The galaxies kept on moving and even today they are moving in a direction that is______.
选项
A、towards the center of the universe
B、away from the center of the universe
C、towards Earth
D、away from Earth
答案
B
解析
细节题,有文章最后一段All of the galaxies…..of the universe可知答案选B。
转载请注明原文地址:https://kaotiyun.com/show/JX3O777K
0
成人本科学位英语
相关试题推荐
IreturnedtoAbuja,thecapitalofNigeria,aftercollegegraduation.Ihadbeentherebeforemymotherbecameaminister.
Imagineyou’reatapartyfullofstrangers.You’renervous.Whoarethesepeople?Howdoyoustartaconversation?Fortunately,
Noonelikestoseehisfeelings______,soGabrielOakturnedaway.
Doinghomework______mostofthechildren’ssparetime,sotheyhavelittletimetoplay.
GermanzoologistRandolfMenzelsaysbeesaren’tasbusyaspeoplebelievetheyare."Beesarenotparticularly【C1】______.Inste
Youcan’tmakeyourselfunderstoodbecauseyouexplainthingsinawaythatistoo______forme.
Photosthatyoumighthavefounddownthebackofyoursofaarenowbigbusiness!In2005,theAmericanartistRichardPrinc
Ihavekeptthatphoto______Icanseeiteveryday,asitremindsmeofmyuniversitydaysinLondon.
Thisplay,______,isverywonderful;therearemanyinterestingcharactersinit.
Accordingtotheweatherforecast,whichisusually(),itwillsnowthisafternoon.
随机试题
导致继发性腹膜炎的细菌中,最多见的是
证券交易结算证券账户是投资者用于证券交易资金清算,记录资金的币种、余额和变动情况的专用账户。()
在采用差异化战略的组织中,人力资源管理的重点是()。
商店无人光顾,售货员无所事事所承受的压力来自于()。
教师在“食物链”教学时,引用“螳螂捕蝉,黄雀在后”的古诗词来反问学生这是一种什么生物现象,进而引入正题。这种导入方式是()。
群体效应是指个体形成群体之后,通过群体对个体约束和指导,群体中个体之间的作用,就会使群体中的一群人,在心理和行为上发生一系列的变化。根据上述定义,下列选项不属于群体效应的是()。
Themulti-billion-dollarWesternpopmusicindustryisunderfire.ItisbeingblamedbytheUnitedNationsforthedramaticris
设,则a=_______.
设有选课表,表中包含字段有:学号N(6),课程号C(6),成绩N(4)。要查询每门课程的学生人数,要求显示课程号和学生人数,对应的SQL语句为:SELECT课程号,COUNT(学号)AS学生人数FROM选课表;GROUPBY______
以下数据结构中,属于非线性数据结构的是()。
最新回复
(
0
)