托福听力备考范文：天文学
托福听力中有大量的专业及学术词汇,这些词汇大多依托于听力背景知识,出国留学网托福频道分享托福听力必背黄金段子：天文学，考生可以加以练习…… 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 ...