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
2023-11-22
59
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] 【C20】
选项
A、furthermore
B、in addition
C、while
D、thus
答案
C
解析
表转折。
转载请注明原文地址:http://tihaiku.com/zcyy/3209064.html
相关试题推荐
(1)ScientistssayChandraprovidesfirstevidencethattwomysteriescancoe
(1)ScientistssayChandraprovidesfirstevidencethattwomysteriescancoe
(1)ScientistssayChandraprovidesfirstevidencethattwomysteriescancoe
(1)ScientistssayChandraprovidesfirstevidencethattwomysteriescancoe
PASSAGETHREE[br]Whatistheconclusionofthewholepassage?Governmentshould
PASSAGETWO[br]Whatistheconclusionofthelastparagraph?Weshouldbreakdo
PASSAGETWO[br]Whatistheconclusionofthewholepassage?Adequatesecurityp
[originaltext]I:Havetheygotanyconclusionastohowpeopleshouldinteract
[originaltext]I:Havetheygotanyconclusionastohowpeopleshouldinteract
PassageTwo[br]Whatistheconclusionofthispassage?Despitealltheeffo
随机试题
InthehousewhereIgrewup,itwasourcustomtoleavethe"onthelatch"
【B1】[br]【B2】[originaltext]Scientistshavedevelopedanewcancerdrug.So
AccordingtoKellyGrant,giftforpurchaseisacceptableonlywhen[br][origi
Thereseemstobesomethingwrongwiththemachine,________?A、doesitB、isn’ti
静态投资回收期为()A.净现金流量等于0的时期 B.净现金流量大于0的时期
管理会计师从事管理会计工作时,可以保持自己的风格,比如比较谨慎的工作风格。这符合
基金销售业务信息管理平台的前台业务系统应具备的功能不包括()。A.提供投资资讯
下列哪个方剂主治痰热结胸证A:半夏泻心汤B:麻杏甘石汤C:贝母瓜蒌散D:清
1983年的第一步“利改税”在中国的财税改革史上迈出了重大的一步,即对国有企业开
共用题干 女,22岁。左侧后牙夜间痛2天。近1年来,左上后牙咬物不适,冷热敏感
最新回复
(
0
)