托福阅读:2012.12.2大陆托福阅读考试机经回顾
阅读1 版本1:宇宙的两个理论,一个说物质会变化但总量不变,一个是会膨胀,最后说一个遥远的恒星的发现说明后一个理论更正确; 版本2:讲的是universe expanding 的两种理论,一个是density在变小。另一种是density不变。因为不断new creation补充变大的空间,然后发现了一种q.它表明前一种理论更可信。 解析: big-bang model widely held theory of the evolution of the universe. Its essential feature is the emergence of the universe from a state of extremely high temperature and density-the so-called big bang that occurred at least 10,000,000,000 years ago. Although this type of universe was proposed by Alexander Friedmann and Abbé Georges Lema?tre in the 1920s, the ... [ 查看全文 ]托福阅读:2012.12.2大陆托福阅读考试机经回顾的相关文章