题目

俄罗斯的人口主要集中在（ ） A．乌拉尔山区           B．欧洲部分             C．西伯利亚地区           D．太平洋沿岸 答案：B． ________ in 1636, Harvard is one of the most famous universities in the United States． [　　] A．Being founded B．It was founded C．Founded D．Founding