9 小时之前 · In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known …
9 小时之前 · Calvin Coolidge (born John Calvin Coolidge Jr. [1] / ˈ k uː l ɪ dʒ / KOOL-ij; July 4, 1872 – January 5, 1933) was the 30th president of the United States, serving from 1923 to …
9 小时之前 · John Glover Roberts Jr. (born January 27, 1955) is an American jurist who has served since 2005 as the 17th chief justice of the United States.He has been described as …
9 小时之前 · On 19 May 2012, Dmitry Medvedev took part in the G-8 Summit at Camp David, in the United States, replacing President Putin, who decided not to represent Russia in the …