读马六甲海峡示意图，回答问题

B

    I have a twin brother, Bob. He is taller than me. His hair is shorter than mine. Many people think we must have many things in common. But in fact this is not true. Bob is more outgoing than me. When my parents' friends come to our house, Bob often sits there and talks to them. But I often sit there and say nothing. Bob likes reading, cooking and drawing. I just like swimming and playing basketball. He has more hobbies than me, but he is not as athletic(擅长运动的) as me. Because Bob does better than me at school, my mom often says to me, “Bob is younger than you, but he can get better grades, you should learn from him.” We both like eating fast food and listening to music.

阅读下列图文材料,回答问题。

材料一  一个是当今世界国力最强的经济、军事大国,一个是国土面积广大、资源丰富、经济发展迅速的“金砖国家”之一。两个大国在国际事务中屡屡博弈……

材料二  俄罗斯和美国示意图。