首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
According to the professor, what were, the beliefs of the Greek philosophers based upon?
According to the professor, what were, the beliefs of the Greek philosophers based upon?
admin
2010-03-19
60
问题
According to the professor, what were, the beliefs of the Greek philosophers based upon?
In ancient times, many people believed the earth was a flat disc. Well over 2,000 years ago, the ancient Greek philosophers were able to put forward two good arguments proving that it was not. Direct observation 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 if 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 North Star, or Polaris, 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 the fast telescope was invented.
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
转载请注明原文地址:https://kaotiyun.com/show/kT9K777K
0
专业英语四级
相关试题推荐
BythetimeyougettoNewYork,I______forLondon.
Signhasbecomeascientifichotbutton.Onlyinthepast20yearshavespecialistsinlanguagestudyrealizedthatsignedlangu
WhywastheUnitedStatescalleda"meltingpot"?
ThefamilyisthecenterofmosttraditionalAsians’lives.Manypeopleworryabouttheirfamilieswelfare,reputation,andhono
ItiscommonlybelievedintheUnitedStatesthatschooliswherepeoplegotogetaneducation.Nevertheless,ithasbeensaid
Whendidtheunemploymentratebegintoincrease?
Theathleticprogramisexpectedtobringpublicitytotheschool,attractstudents,fosterstudentunity,andencouragealumni
Publicofficialsandcandidatesforpublicofficeroutinelyusepublicopinionpollstokeeptrackofwhatthepeoplearethinki
Theking’sdaughterthreatenedtodrinkthe______chemicalifherefusedherrequest.
ThesightofthefruitsaladmadeourdaughterKit’smouth______.
随机试题
对于新人职员工以及在校学生应预扣预缴个税的规定,以下说法错误的是()。
A.酪氨酸酶缺乏B.6-磷酸葡萄糖脱氢酶分子缺陷C.苯丙氨酸羟化酶缺乏D.胆碱酯酶不可逆性抑制E.巯基酶不可逆性抑制蚕豆病
子宫颈癌的好发部位是
病灶定位在。最可能的病因是
依我国《刑事诉讼法》的有关规定,下列说法正确的是哪一项?()
关于贩卖毒品罪,下列说法错误的是:()
期间核查的目的是()。
中国半殖民地半封建社会开端于()。
茶叶因生长环境的差异而带有不同的味道,一些品茶专家根据多年的经验品一品便知茶叶的产区在哪里。这表明()。
2015年6月29日,《亚洲基础设施投资银行协定》签署仪式在北京人民大会堂举行。《亚洲基础设施投资银行协定》的签署,标志着
最新回复
(
0
)