首页
登录
职称英语
[originaltext] In ancient times, many people believed the earth was a flat d
[originaltext] In ancient times, many people believed the earth was a flat d
游客
2024-04-09
34
管理
问题
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 this could be true only if the earth wasround. 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 North Star appeared lower in the sky when they traveled south, in more northerly 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 North Star that the Greeks first calculated 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, the length of many athletic stadiums. This would make the Greek’s estimate about twice the figure accepted today, a very good estimate for those writing so long before even me first telescope was invented. Now listen to the following recording and answer questions 19 to 21.
19. What is the talk mainly about?
20. According to the professor, what were the beliefs of the Greek philosophers based upon?
21. What does me professor say about ancient Greeks who traveled south?
选项
A、How the natural world was described in Greek mythology.
B、What they observed directly.
C、The writings of philosophers from other societies.
D、Measurements made with scientific instruments.
答案
B
解析
细节题。根据Direct observations of heavenly bodies was the basis of both these arguments.可知古希腊哲学家们的论点是基于对天体的直接观察。因此,正确答案为B。
转载请注明原文地址:https://tihaiku.com/zcyy/3547229.html
相关试题推荐
[originaltext]TUVALU,atinycountryinthePacificOcean,hasaskedforhe
[originaltext]TUVALU,atinycountryinthePacificOcean,hasaskedforhe
[originaltext]TUVALU,atinycountryinthePacificOcean,hasaskedforhe
[originaltext]E-booksarebringingaboutaprofoundrevolutioninthewayb
[originaltext]AmericanmagicianDavidBlaineistobesuspendedinaglass
[originaltext]AmericanmagicianDavidBlaineistobesuspendedinaglass
[originaltext]M:Goodmorning,Dr.Smith.MynameisPeter.Iamafreshmanin
[originaltext]M:Goodmorning,Dr.Smith.MynameisPeter.Iamafreshmanin
[originaltext]M:Honey,thebasketballgameisabouttostart.Andcouldyoubr
[originaltext]M:Mygrandmawaskilledinacaraccidentlastweek.MayIaskf
随机试题
Einsteinwasamandeeply______totheidealofthemorallyresponsiblescientist
[originaltext]M:Excusememadam.W:Yes?M:Iwonderwhetheryou’dhelpus.We
受教育者享有在()上获得公正评价,完成规定的学业后获得相应的学业证书、学位证书
社会历史规律与自然界发展规律的共同点是()A.它们都是不包含偶然性的必然过程
若某航空公司的飞机订票系统有n个订票终端,系统为每个订票终端创建一个售票终端的进
先天性喉喘鸣的病因是A.先天性甲状软骨裂或甲状软骨部分缺失 B.先天性喉裂或喉
建筑安装工程含税造价中的税金应包括( )等。 A、印花税 B、增值税
患者男,30岁,因外伤导致右侧上颌中切牙和侧切牙冠折断,经完善根管治疗及桩核修复
行政复议期间,下列情形中,属于行政复议中止的有( )。A.作为申请人的公民丧失参
安全事故调查报告的内容一般不包括()。A.事故发生的经过和救援情况 B.事
最新回复
(
0
)