首页
登录
职称英语
The appearance of the star Gamma Cephei varies regularly. The existence of a
The appearance of the star Gamma Cephei varies regularly. The existence of a
游客
2024-01-10
44
管理
问题
The appearance of the star Gamma Cephei varies regularly. The existence of a planet circling a star can cause regular variation in its appearance. However, the regular variation in Gamma Cephei’s appearance is no reason to think that there is a planet circling it, since the slow rotation of a star can also cause its appearance to vary regularly and________.
Which of the following most logically completes the argument?
选项
A、many stars that have planets circling them rotate slowly
B、Gamma Cephei varies more in appearance than many other stars do
C、it is easier to determine the speed at which a star rotates than to determine whether a planet is circling it
D、analysis of sunspot activity on Gamma Cephei shows that it rotates slowly
E、Gamma Cephei is only one of many stars that vary regularly in appearance
答案
D
解析
恒星自转会导致其外表发生变化,同时仙王座伽玛星自身确实会自转,因此可以排除行星公转导致的恒星外表变化。D正确。A项填到文章内不能进一步证明是因为仙王座伽玛星的自转导致其外表发生变化。B项仙王座伽玛星外表变化大无法进一步证明是什么原因。C项文章和确定转速的难易程度无关。E项文章已经说仙王座伽玛星发生规律变化,至于它是不是唯一的,和文章无关。
转载请注明原文地址:https://tihaiku.com/zcyy/3349360.html
相关试题推荐
Forthewriterswhofirstgavefeudalismitsname,theexistenceoffeudalismpr
Essayist:Theexistenceofamoralorderintheuniverse—i.e.,anorderinwhi
Somesociologistsclaimtohavefoundadirectlinkfromtheappearanceofnews
A、Emotionalexpressionvariesbetweenindividualstoasignificantlygreaterext
A、appreciationofthetheory’sabilitytoexplainthedisappearanceofcertainc
Airturbulencecansubstantiallyacceleratetheappearanceoflargedro
Becauseofitsprecision,theCepheid-variablemethodofcorrelating
Becauseofitsprecision,theCepheid-variablemethodofcorrelating
Airturbulencecansubstantiallyacceleratetheappearanceoflargedro
Airturbulencecansubstantiallyacceleratetheappearanceoflargedro
随机试题
Thelayoutcanbefinishedthedayaftertomorrowata_______,butthatwouldme
WhenIenteredtheclassroom,Ifoundthestudents______thequestionsingroup
Doyouknowinsurance(保险)?Buyinginsuranceisameansbywhichpeoplecanp
TheLondonUndergroundMapTheLondonUndergroundmapise
电加热器应有安全措施及()调节装置。A.功率与温度 B.电量与温度 C.
王莘作品《歌唱祖国》的拍子属于( )。A.单拍子 B.复拍子 C.变换拍子
A.催产素 B.麦角新碱 C.二氢麦角毒 D.麦角胺 E.垂体后叶素与咖
乙房地产估价机构承接了一幢住宅烂尾楼转让价格的评估业务,估价时点为2012年6月
城市道路又是城市的通风道,要结合城市绿地规划,把绿地中的新鲜空气,通过道路引入城
儿童多动综合征是小学生中最为常见的一种以注意缺陷和活动过度为主要特征的行为障碍综
最新回复
(
0
)