美国Pennsylvania大学的研究人员发现，对于轻度亚临床甲低（没有明显临床表现的甲低），即使不进行治疗也不会增加心血管疾病的发病风险。......

In a modern sense, Mothers’Day originated(源于) from the United States and initiated(发起) by Anna Jarvis. She was unma......

1886年2月13日，汤玛斯·埃肯斯（Thomas Eakins，1844-1916）离开了费城艺术学院（Pennsylvania Academy of the Fine Arts）。这所男女合校的......

Louisa May Alcott was born in Germantown,Pennsylvania on November 29,1832.In1840 her family moved to Concord,where Louis......

On November 9~(th),2016,landlord Donald Trump was elected as the 45~(th) president of the U.S.The gorgeous woman beside ......