首页
登录
职称英语
According to the speaker, what were the beliefs of the Greek philosophers based
According to the speaker, what were the beliefs of the Greek philosophers based
游客
2024-10-30
41
管理
问题
According to the speaker, what were the beliefs of the Greek philosophers based upon? [br]
In ancient times, many people believed the earth was a flat disc. Well over 2000 years ago, the ancient Greek philosophers were able to put forward two good arguments proving that it was not. Direct observations of heavenly bodies was the basis of both these arguments. First, the Greeks knew that during eclipses of the moon, the earth was between the sun and the moon, and they saw that during these eclipses, the earth’s shadow on the moon was always round, they realized that this could be true only ff the earth was spherical. If the earth were a flat disc, then its shadow during eclipses would not be a perfect circle, it would be stretched out into a long ellipse. The second argument was based on what the Greeks saw during their travels. They noticed that the Noah Star, or Polaris, appeared lower in the sky when they traveled south, in more northernly regions, the North Star appeared to them to be much higher in the sky. By the way, it was also from this difference in the apparent position of the Noah Star that the Greeks first calculate the approximate distance around the circumference of the earth, a figure recorded in ancient documents says 400, 000 stadia, that’s the plural of the word stadium. Today, it’s not known exactly what length one stadium represents, but let’s say it was about 200 meters. It’s a very good estimate for those writing se long before even the first telescope was invented.
选项
A、They noticed an apparent change in the position of the North Star.
B、They observed eclipses at different rimes of the year.
C、They were the first to estimate the distance between heavenly bodies.
D、They wanted to prove that the Earth was flat.
答案
A
解析
语义理解题。希腊人在旅行的时候发现,当他们在南方的时候北极星在天空中的位置相对较低,而在北方地区的时候,北极星的位置就要高一些。可知,他们观察到的是北极星位置的改变。选项A为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3824262.html
相关试题推荐
AccordingtotheSun,wheredidtheygettilepicturesofSaddamHusseininjail
Thespeakertellsthestudentsthattheyarenotlikelytosucceedifthey[br]
Thespeakertellsthestudentsthattheyarenotlikelytosucceedifthey[br]
Thespeakertellsthestudentsthattheyarenotlikelytosucceedifthey[orig
Whatarespeakersmainlydiscussing?[originaltext]M:Howdidyoulikeyesterday
Whatarethespeakersmainlydiscussing?[br][originaltext]W:DoctorWhite,we
Whatarethespeakersmainlydiscussing?[br][originaltext]W:DoctorWhite,we
Whatarethespeakersmainlydiscussing?[originaltext]W:DoctorWhite,werecen
Whatdoesthespeakeremphasizeasthereasonformaintainingsearesources?[br
Whatdoesthespeakeremphasizeasthereasonformaintainingsearesources?[br
随机试题
[originaltext]MayIuseyourpen?[/originaltext][audioFiles]audio_ehbm_00151(2
[originaltext][16]IhavebeendoingsomeresearchintowhatpeopleinBrit
Peoplewholiveinheavilyindustrializedareasdonotgetasmuchsunlight
下列关于慢性水生毒性的分类,说法错误的是( )。A.慢性Ⅰ对水中生物具有剧烈毒
在下列选项中,说法正确的有()。A.练习是对动作的重复,不能使人的动作发生
(2021年真题)关于公司型股权投资基金投资者,以下表述错误的是()。A.
支原体与L型细菌的不同点是A.都能通过除菌滤器B.都缺乏细胞壁C.对青霉素都有耐
A.黑便B.低磷血症C.心律失常D.视物模糊E.定向力障碍、眩晕枸橼酸铋钾可能的
期货交易所结算准备金余额的计算公式为()。A.当日结算准备金余额=上一交易日
(2018年真题)对β-内酰胺类抗菌药物过敏的患者,Ⅰ类切口围术期预防应用抗菌药
最新回复
(
0
)