读俄罗斯简图，结合所学知识判断，下列叙述正确的是

A．俄罗斯是世界上唯一地跨两洲的国家

B．俄罗斯森林资源丰富，但矿产资源贫乏

C．伏尔加河流域和顿河流域是俄罗斯主要的农业分布区

D．俄罗斯的交通运输以管道和航空为主

Studies show that the things that contribute most to a sense of happiness cannot be bought,

________ a good family life, friendship and work satisfaction.[      ]

A. as for  

B. in view of

C. in case of  

D. such as