首页
登录
职称英语
Mounting evidence has led astronomers to just an improbable conclusion; At
Mounting evidence has led astronomers to just an improbable conclusion; At
游客
2024-10-30
35
管理
问题
Mounting evidence has led astronomers to just an improbable conclusion; At least 90 percent and possibly 99 percent of all matter in the universe is completely【C1】______ . Astronomers call this stuff dark matter.
An astronomer first reported the matter after noting some unusual behaviour in visible matter. In 1993, Swiss astrophysicist Fritz Zwicky concluded that 【C2】______ was causing strange gravitational effects【C3】______ these galaxies.
Galaxies are like【C4】______ islands in deep space【C5】______ billions of stars that are held together by the force of【C7】______ .Some galaxies are part of【C6】______ systems called clusters; which contain many galaxies. Most galaxies; belong to smaller systems called groups. Groups and clusters in 【C8】______ form even larger【C9】______ known as super-clusters. Just【C10】______ the force of gravity keeps stars together in galaxies the force of gravity【C11】______to keep galaxies together in clusters~
This same force of gravity keeps planets【C12】______ around the sun【C13】______ flying off into space. How great a force gravity exerts depends on the mass of the objects【C14】______ and the distance between them, a【C15】______ discovered by Newton. The amount of mass and the distance between objects also【C16】______ how fast the objects travel as they orbit each other. The force of its gravity keeps Earth and the other planets【C17】______ orbit around it. The orbital speeds of the planets【C18】______ with increasing distance from the sun. The planet nearest to the sun travels at an orbital speed of 48 kilometers per second【C19】______ the distant planet Pluto orbits【C20】______ speed of 7 kilometers per second [br] 【C3】
选项
A、On
B、in
C、to
D、with
答案
A
解析
have effect on sth。
转载请注明原文地址:https://tihaiku.com/zcyy/3823615.html
相关试题推荐
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
随机试题
Retailfirmsanalyzeconsumersalestren
现有A、B、C三种集料,需要合成级配为M的矿质混合料,各集料的分计筛余和合成混合
2017年1月18日,国家主席习近平在联合国日内瓦总部发表题为《共同构建人类命运
郁证总的治法是A.疏肝解郁 B.化痰散结 C.养心安神 D.养血柔
巴赫是晚期巴洛克音乐的杰出代表,他的去世标志着巴洛克音乐的终结。同属于巴洛克音乐
下列关于综合理财服务的说法,不正确的是( )。A.综合理财服务是商业银行在理财顾
关于期货公司的作用,表述正确的有()。A.期货公司可以通过专业服务实现资产
下列所得中,免征个人所得税的有()。A.国债利息 B.国家按规定发给职工
(2014年真题)下列有关细节测试样本规模的说法中,错误的是( )。A.总体项
砌体砂浆施工质量检查内容有()。A.配合比 B.计量 C.搅拌质量 D.
最新回复
(
0
)